Home / 138,417.24-191,015.76-74,755.02

Finding the Fourth Proportional to 138,417.24, 191,015.76 and 74,755.02

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Solution

The fourth proportional to 138,417.24, 191,015.76 and 74,755.02 is: 103,161.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,417.24 : 191,015.76 = 74,755.02 : x
  2. Step 2: Convert to fraction form
    138,417.24/191,015.76 = 74,755.02/x
  3. Step 3: Cross multiply
    138,417.24x = 191,015.76 × 74,755.02
  4. Step 4: Simplify right side
    138,417.24x = 14,279,386,959.12
  5. Step 5: Solve for x
    x = 14,279,386,959.12/138,417.24
  6. Step 6: Final answer
    x = 103,161.91

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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.