Home / 122,902.62-169,628.04-71,912.40

Finding the Fourth Proportional to 122,902.62, 169,628.04 and 71,912.40

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Solution

The fourth proportional to 122,902.62, 169,628.04 and 71,912.40 is: 99,252.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,902.62 : 169,628.04 = 71,912.40 : x
  2. Step 2: Convert to fraction form
    122,902.62/169,628.04 = 71,912.40/x
  3. Step 3: Cross multiply
    122,902.62x = 169,628.04 × 71,912.40
  4. Step 4: Simplify right side
    122,902.62x = 12,198,359,463.70
  5. Step 5: Solve for x
    x = 12,198,359,463.70/122,902.62
  6. Step 6: Final answer
    x = 99,252.23

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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.