Home / 124,981.32-187,491.40-40,721.88

Finding the Fourth Proportional to 124,981.32, 187,491.40 and 40,721.88

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Solution

The fourth proportional to 124,981.32, 187,491.40 and 40,721.88 is: 61,089.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,981.32 : 187,491.40 = 40,721.88 : x
  2. Step 2: Convert to fraction form
    124,981.32/187,491.40 = 40,721.88/x
  3. Step 3: Cross multiply
    124,981.32x = 187,491.40 × 40,721.88
  4. Step 4: Simplify right side
    124,981.32x = 7,635,002,291.83
  5. Step 5: Solve for x
    x = 7,635,002,291.83/124,981.32
  6. Step 6: Final answer
    x = 61,089.15

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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.