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Finding the Fourth Proportional to 123,108.96, 169,834.80 and 75,343.20

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Solution

The fourth proportional to 123,108.96, 169,834.80 and 75,343.20 is: 103,939.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,108.96 : 169,834.80 = 75,343.20 : x
  2. Step 2: Convert to fraction form
    123,108.96/169,834.80 = 75,343.20/x
  3. Step 3: Cross multiply
    123,108.96x = 169,834.80 × 75,343.20
  4. Step 4: Simplify right side
    123,108.96x = 12,795,897,303.36
  5. Step 5: Solve for x
    x = 12,795,897,303.36/123,108.96
  6. Step 6: Final answer
    x = 103,939.61

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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.