Home / 187,002.40-280,417.20-81,767.20

Finding the Fourth Proportional to 187,002.40, 280,417.20 and 81,767.20

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Solution

The fourth proportional to 187,002.40, 280,417.20 and 81,767.20 is: 122,613.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,002.40 : 280,417.20 = 81,767.20 : x
  2. Step 2: Convert to fraction form
    187,002.40/280,417.20 = 81,767.20/x
  3. Step 3: Cross multiply
    187,002.40x = 280,417.20 × 81,767.20
  4. Step 4: Simplify right side
    187,002.40x = 22,928,929,275.84
  5. Step 5: Solve for x
    x = 22,928,929,275.84/187,002.40
  6. Step 6: Final answer
    x = 122,613.02

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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.