Home / 138,943.32-191,785.38-88,642.28

Finding the Fourth Proportional to 138,943.32, 191,785.38 and 88,642.28

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Solution

The fourth proportional to 138,943.32, 191,785.38 and 88,642.28 is: 122,354.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,943.32 : 191,785.38 = 88,642.28 : x
  2. Step 2: Convert to fraction form
    138,943.32/191,785.38 = 88,642.28/x
  3. Step 3: Cross multiply
    138,943.32x = 191,785.38 × 88,642.28
  4. Step 4: Simplify right side
    138,943.32x = 17,000,293,353.87
  5. Step 5: Solve for x
    x = 17,000,293,353.87/138,943.32
  6. Step 6: Final answer
    x = 122,354.16

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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.