Home / 123,545.52-170,511.14-78,227.73

Finding the Fourth Proportional to 123,545.52, 170,511.14 and 78,227.73

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Solution

The fourth proportional to 123,545.52, 170,511.14 and 78,227.73 is: 107,965.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,545.52 : 170,511.14 = 78,227.73 : x
  2. Step 2: Convert to fraction form
    123,545.52/170,511.14 = 78,227.73/x
  3. Step 3: Cross multiply
    123,545.52x = 170,511.14 × 78,227.73
  4. Step 4: Simplify right side
    123,545.52x = 13,338,699,617.48
  5. Step 5: Solve for x
    x = 13,338,699,617.48/123,545.52
  6. Step 6: Final answer
    x = 107,965.87

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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.