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Finding the Fourth Proportional to 116,545.80, 174,905.10 and 77,089.80

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Solution

The fourth proportional to 116,545.80, 174,905.10 and 77,089.80 is: 115,691.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,545.80 : 174,905.10 = 77,089.80 : x
  2. Step 2: Convert to fraction form
    116,545.80/174,905.10 = 77,089.80/x
  3. Step 3: Cross multiply
    116,545.80x = 174,905.10 × 77,089.80
  4. Step 4: Simplify right side
    116,545.80x = 13,483,399,177.98
  5. Step 5: Solve for x
    x = 13,483,399,177.98/116,545.80
  6. Step 6: Final answer
    x = 115,691.85

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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.