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Finding the Fourth Proportional to 115,545.39, 159,436.88 and 64,551.87

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Solution

The fourth proportional to 115,545.39, 159,436.88 and 64,551.87 is: 89,072.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,545.39 : 159,436.88 = 64,551.87 : x
  2. Step 2: Convert to fraction form
    115,545.39/159,436.88 = 64,551.87/x
  3. Step 3: Cross multiply
    115,545.39x = 159,436.88 × 64,551.87
  4. Step 4: Simplify right side
    115,545.39x = 10,291,948,428.21
  5. Step 5: Solve for x
    x = 10,291,948,428.21/115,545.39
  6. Step 6: Final answer
    x = 89,072.77

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1.5x scale

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.