Home / 80,146.23-120,437.45-42,732.74

Finding the Fourth Proportional to 80,146.23, 120,437.45 and 42,732.74

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Solution

The fourth proportional to 80,146.23, 120,437.45 and 42,732.74 is: 64,215.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,146.23 : 120,437.45 = 42,732.74 : x
  2. Step 2: Convert to fraction form
    80,146.23/120,437.45 = 42,732.74/x
  3. Step 3: Cross multiply
    80,146.23x = 120,437.45 × 42,732.74
  4. Step 4: Simplify right side
    80,146.23x = 5,146,621,872.90
  5. Step 5: Solve for x
    x = 5,146,621,872.90/80,146.23
  6. Step 6: Final answer
    x = 64,215.39

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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.