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Finding the Fourth Proportional to 121,246.92, 181,898.94 and 38,140.92

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Solution

The fourth proportional to 121,246.92, 181,898.94 and 38,140.92 is: 57,220.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,246.92 : 181,898.94 = 38,140.92 : x
  2. Step 2: Convert to fraction form
    121,246.92/181,898.94 = 38,140.92/x
  3. Step 3: Cross multiply
    121,246.92x = 181,898.94 × 38,140.92
  4. Step 4: Simplify right side
    121,246.92x = 6,937,792,918.62
  5. Step 5: Solve for x
    x = 6,937,792,918.62/121,246.92
  6. Step 6: Final answer
    x = 57,220.36

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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.