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Finding the Fourth Proportional to 155,166.39, 214,129.80 and 88,098.39

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Solution

The fourth proportional to 155,166.39, 214,129.80 and 88,098.39 is: 121,575.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,166.39 : 214,129.80 = 88,098.39 : x
  2. Step 2: Convert to fraction form
    155,166.39/214,129.80 = 88,098.39/x
  3. Step 3: Cross multiply
    155,166.39x = 214,129.80 × 88,098.39
  4. Step 4: Simplify right side
    155,166.39x = 18,864,490,631.02
  5. Step 5: Solve for x
    x = 18,864,490,631.02/155,166.39
  6. Step 6: Final answer
    x = 121,575.88

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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.