Home / 138,480.24-191,116.08-88,176

Finding the Fourth Proportional to 138,480.24, 191,116.08 and 88,176

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Solution

The fourth proportional to 138,480.24, 191,116.08 and 88,176 is: 121,691.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,480.24 : 191,116.08 = 88,176 : x
  2. Step 2: Convert to fraction form
    138,480.24/191,116.08 = 88,176/x
  3. Step 3: Cross multiply
    138,480.24x = 191,116.08 × 88,176
  4. Step 4: Simplify right side
    138,480.24x = 16,851,851,470.08
  5. Step 5: Solve for x
    x = 16,851,851,470.08/138,480.24
  6. Step 6: Final answer
    x = 121,691.38

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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.