Home / 124,997.26-187,437.56-72,421.78

Finding the Fourth Proportional to 124,997.26, 187,437.56 and 72,421.78

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Solution

The fourth proportional to 124,997.26, 187,437.56 and 72,421.78 is: 108,598.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,997.26 : 187,437.56 = 72,421.78 : x
  2. Step 2: Convert to fraction form
    124,997.26/187,437.56 = 72,421.78/x
  3. Step 3: Cross multiply
    124,997.26x = 187,437.56 × 72,421.78
  4. Step 4: Simplify right side
    124,997.26x = 13,574,561,734.06
  5. Step 5: Solve for x
    x = 13,574,561,734.06/124,997.26
  6. Step 6: Final answer
    x = 108,598.87

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.