Home / 138,966.24-191,672.15-87,987.27

Finding the Fourth Proportional to 138,966.24, 191,672.15 and 87,987.27

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Solution

The fourth proportional to 138,966.24, 191,672.15 and 87,987.27 is: 121,358.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,966.24 : 191,672.15 = 87,987.27 : x
  2. Step 2: Convert to fraction form
    138,966.24/191,672.15 = 87,987.27/x
  3. Step 3: Cross multiply
    138,966.24x = 191,672.15 × 87,987.27
  4. Step 4: Simplify right side
    138,966.24x = 16,864,708,773.59
  5. Step 5: Solve for x
    x = 16,864,708,773.59/138,966.24
  6. Step 6: Final answer
    x = 121,358.32

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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.