Home / 120,605.32-180,780.30-40,567.09

Finding the Fourth Proportional to 120,605.32, 180,780.30 and 40,567.09

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Solution

The fourth proportional to 120,605.32, 180,780.30 and 40,567.09 is: 60,807.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,605.32 : 180,780.30 = 40,567.09 : x
  2. Step 2: Convert to fraction form
    120,605.32/180,780.30 = 40,567.09/x
  3. Step 3: Cross multiply
    120,605.32x = 180,780.30 × 40,567.09
  4. Step 4: Simplify right side
    120,605.32x = 7,333,730,497.49
  5. Step 5: Solve for x
    x = 7,333,730,497.49/120,605.32
  6. Step 6: Final answer
    x = 60,807.69

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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.