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Finding the Fourth Proportional to 88,900.90, 133,092.15 and 86,308.90

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Solution

The fourth proportional to 88,900.90, 133,092.15 and 86,308.90 is: 129,211.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,900.90 : 133,092.15 = 86,308.90 : x
  2. Step 2: Convert to fraction form
    88,900.90/133,092.15 = 86,308.90/x
  3. Step 3: Cross multiply
    88,900.90x = 133,092.15 × 86,308.90
  4. Step 4: Simplify right side
    88,900.90x = 11,487,037,065.14
  5. Step 5: Solve for x
    x = 11,487,037,065.14/88,900.90
  6. Step 6: Final answer
    x = 129,211.71

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1.5x scale

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.