Home / 131,439.69-181,387.92-74,068.02

Finding the Fourth Proportional to 131,439.69, 181,387.92 and 74,068.02

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Solution

The fourth proportional to 131,439.69, 181,387.92 and 74,068.02 is: 102,214.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,439.69 : 181,387.92 = 74,068.02 : x
  2. Step 2: Convert to fraction form
    131,439.69/181,387.92 = 74,068.02/x
  3. Step 3: Cross multiply
    131,439.69x = 181,387.92 × 74,068.02
  4. Step 4: Simplify right side
    131,439.69x = 13,435,044,086.32
  5. Step 5: Solve for x
    x = 13,435,044,086.32/131,439.69
  6. Step 6: Final answer
    x = 102,214.51

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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.