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Finding the Fourth Proportional to 124,489.27, 171,809.72 and 70,782.34

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Solution

The fourth proportional to 124,489.27, 171,809.72 and 70,782.34 is: 97,687.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,489.27 : 171,809.72 = 70,782.34 : x
  2. Step 2: Convert to fraction form
    124,489.27/171,809.72 = 70,782.34/x
  3. Step 3: Cross multiply
    124,489.27x = 171,809.72 × 70,782.34
  4. Step 4: Simplify right side
    124,489.27x = 12,161,092,803.38
  5. Step 5: Solve for x
    x = 12,161,092,803.38/124,489.27
  6. Step 6: Final answer
    x = 97,687.88

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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.