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Finding the Fourth Proportional to 123,349.59, 170,204.20 and 72,343.08

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Solution

The fourth proportional to 123,349.59, 170,204.20 and 72,343.08 is: 99,822.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,349.59 : 170,204.20 = 72,343.08 : x
  2. Step 2: Convert to fraction form
    123,349.59/170,204.20 = 72,343.08/x
  3. Step 3: Cross multiply
    123,349.59x = 170,204.20 × 72,343.08
  4. Step 4: Simplify right side
    123,349.59x = 12,313,096,056.94
  5. Step 5: Solve for x
    x = 12,313,096,056.94/123,349.59
  6. Step 6: Final answer
    x = 99,822.76

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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.