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Finding the Fourth Proportional to 102,614.60, 153,921.90 and 88,790.60

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Solution

The fourth proportional to 102,614.60, 153,921.90 and 88,790.60 is: 133,185.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,614.60 : 153,921.90 = 88,790.60 : x
  2. Step 2: Convert to fraction form
    102,614.60/153,921.90 = 88,790.60/x
  3. Step 3: Cross multiply
    102,614.60x = 153,921.90 × 88,790.60
  4. Step 4: Simplify right side
    102,614.60x = 13,666,817,854.14
  5. Step 5: Solve for x
    x = 13,666,817,854.14/102,614.60
  6. Step 6: Final answer
    x = 133,185.90

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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.