Home / 123,545.18-170,487.78-66,955.34

Finding the Fourth Proportional to 123,545.18, 170,487.78 and 66,955.34

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Solution

The fourth proportional to 123,545.18, 170,487.78 and 66,955.34 is: 92,395.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,545.18 : 170,487.78 = 66,955.34 : x
  2. Step 2: Convert to fraction form
    123,545.18/170,487.78 = 66,955.34/x
  3. Step 3: Cross multiply
    123,545.18x = 170,487.78 × 66,955.34
  4. Step 4: Simplify right side
    123,545.18x = 11,415,067,275.75
  5. Step 5: Solve for x
    x = 11,415,067,275.75/123,545.18
  6. Step 6: Final answer
    x = 92,395.89

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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.