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Finding the Fourth Proportional to 136,224.92, 187,991.32 and 75,798.11

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Solution

The fourth proportional to 136,224.92, 187,991.32 and 75,798.11 is: 104,601.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,224.92 : 187,991.32 = 75,798.11 : x
  2. Step 2: Convert to fraction form
    136,224.92/187,991.32 = 75,798.11/x
  3. Step 3: Cross multiply
    136,224.92x = 187,991.32 × 75,798.11
  4. Step 4: Simplify right side
    136,224.92x = 14,249,386,752.41
  5. Step 5: Solve for x
    x = 14,249,386,752.41/136,224.92
  6. Step 6: Final answer
    x = 104,601.91

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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.