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Finding the Fourth Proportional to 157,897.70, 217,898.60 and 89,914.68

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Solution

The fourth proportional to 157,897.70, 217,898.60 and 89,914.68 is: 124,082.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,897.70 : 217,898.60 = 89,914.68 : x
  2. Step 2: Convert to fraction form
    157,897.70/217,898.60 = 89,914.68/x
  3. Step 3: Cross multiply
    157,897.70x = 217,898.60 × 89,914.68
  4. Step 4: Simplify right side
    157,897.70x = 19,592,282,891.45
  5. Step 5: Solve for x
    x = 19,592,282,891.45/157,897.70
  6. Step 6: Final answer
    x = 124,082.13

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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.