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Finding the Fourth Proportional to 99,060, 136,705.20 and 54,348

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Solution

The fourth proportional to 99,060, 136,705.20 and 54,348 is: 75,001.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,060 : 136,705.20 = 54,348 : x
  2. Step 2: Convert to fraction form
    99,060/136,705.20 = 54,348/x
  3. Step 3: Cross multiply
    99,060x = 136,705.20 × 54,348
  4. Step 4: Simplify right side
    99,060x = 7,429,654,209.60
  5. Step 5: Solve for x
    x = 7,429,654,209.60/99,060
  6. Step 6: Final answer
    x = 75,001.56

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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.