Home / 122,872.46-169,562.31-71,920.22

Finding the Fourth Proportional to 122,872.46, 169,562.31 and 71,920.22

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Solution

The fourth proportional to 122,872.46, 169,562.31 and 71,920.22 is: 99,248.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,872.46 : 169,562.31 = 71,920.22 : x
  2. Step 2: Convert to fraction form
    122,872.46/169,562.31 = 71,920.22/x
  3. Step 3: Cross multiply
    122,872.46x = 169,562.31 × 71,920.22
  4. Step 4: Simplify right side
    122,872.46x = 12,194,958,638.91
  5. Step 5: Solve for x
    x = 12,194,958,638.91/122,872.46
  6. Step 6: Final answer
    x = 99,248.92

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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.