Home / 122,555.85-169,100.83-71,545.43

Finding the Fourth Proportional to 122,555.85, 169,100.83 and 71,545.43

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Solution

The fourth proportional to 122,555.85, 169,100.83 and 71,545.43 is: 98,717.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,555.85 : 169,100.83 = 71,545.43 : x
  2. Step 2: Convert to fraction form
    122,555.85/169,100.83 = 71,545.43/x
  3. Step 3: Cross multiply
    122,555.85x = 169,100.83 × 71,545.43
  4. Step 4: Simplify right side
    122,555.85x = 12,098,391,595.71
  5. Step 5: Solve for x
    x = 12,098,391,595.71/122,555.85
  6. Step 6: Final answer
    x = 98,717.37

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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.