Home / 80,143,674.30-120,215,511.45-54,634,506.30

Finding the Fourth Proportional to 80,143,674.30, 120,215,511.45 and 54,634,506.30

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Solution

The fourth proportional to 80,143,674.30, 120,215,511.45 and 54,634,506.30 is: 81,951,759.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,143,674.30 : 120,215,511.45 = 54,634,506.30 : x
  2. Step 2: Convert to fraction form
    80,143,674.30/120,215,511.45 = 54,634,506.30/x
  3. Step 3: Cross multiply
    80,143,674.30x = 120,215,511.45 × 54,634,506.30
  4. Step 4: Simplify right side
    80,143,674.30x = 6,567,915,117,672,747
  5. Step 5: Solve for x
    x = 6,567,915,117,672,747/80,143,674.30
  6. Step 6: Final answer
    x = 81,951,759.45

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.