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Finding the Fourth Proportional to 88,924.70, 133,387.05 and 85,814.30

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Solution

The fourth proportional to 88,924.70, 133,387.05 and 85,814.30 is: 128,721.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,924.70 : 133,387.05 = 85,814.30 : x
  2. Step 2: Convert to fraction form
    88,924.70/133,387.05 = 85,814.30/x
  3. Step 3: Cross multiply
    88,924.70x = 133,387.05 × 85,814.30
  4. Step 4: Simplify right side
    88,924.70x = 11,446,516,324.82
  5. Step 5: Solve for x
    x = 11,446,516,324.82/88,924.70
  6. Step 6: Final answer
    x = 128,721.45

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Similar ratio
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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.