Home / 131,538.89-181,479.25-74,910.17

Finding the Fourth Proportional to 131,538.89, 181,479.25 and 74,910.17

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Solution

The fourth proportional to 131,538.89, 181,479.25 and 74,910.17 is: 103,350.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,538.89 : 181,479.25 = 74,910.17 : x
  2. Step 2: Convert to fraction form
    131,538.89/181,479.25 = 74,910.17/x
  3. Step 3: Cross multiply
    131,538.89x = 181,479.25 × 74,910.17
  4. Step 4: Simplify right side
    131,538.89x = 13,594,641,468.97
  5. Step 5: Solve for x
    x = 13,594,641,468.97/131,538.89
  6. Step 6: Final answer
    x = 103,350.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.