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Finding the Fourth Proportional to 136,468.04, 204,663.18 and 86,472.68

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Solution

The fourth proportional to 136,468.04, 204,663.18 and 86,472.68 is: 129,684.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,468.04 : 204,663.18 = 86,472.68 : x
  2. Step 2: Convert to fraction form
    136,468.04/204,663.18 = 86,472.68/x
  3. Step 3: Cross multiply
    136,468.04x = 204,663.18 × 86,472.68
  4. Step 4: Simplify right side
    136,468.04x = 17,697,773,671.92
  5. Step 5: Solve for x
    x = 17,697,773,671.92/136,468.04
  6. Step 6: Final answer
    x = 129,684.38

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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.