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Finding the Fourth Proportional to 98,177.90, 135,486.15 and 55,737.14

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Solution

The fourth proportional to 98,177.90, 135,486.15 and 55,737.14 is: 76,917.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,177.90 : 135,486.15 = 55,737.14 : x
  2. Step 2: Convert to fraction form
    98,177.90/135,486.15 = 55,737.14/x
  3. Step 3: Cross multiply
    98,177.90x = 135,486.15 × 55,737.14
  4. Step 4: Simplify right side
    98,177.90x = 7,551,610,510.61
  5. Step 5: Solve for x
    x = 7,551,610,510.61/98,177.90
  6. Step 6: Final answer
    x = 76,917.62

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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.