Home / 138,616.18-191,290.17-74,953.82

Finding the Fourth Proportional to 138,616.18, 191,290.17 and 74,953.82

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Solution

The fourth proportional to 138,616.18, 191,290.17 and 74,953.82 is: 103,436.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,616.18 : 191,290.17 = 74,953.82 : x
  2. Step 2: Convert to fraction form
    138,616.18/191,290.17 = 74,953.82/x
  3. Step 3: Cross multiply
    138,616.18x = 191,290.17 × 74,953.82
  4. Step 4: Simplify right side
    138,616.18x = 14,337,928,969.95
  5. Step 5: Solve for x
    x = 14,337,928,969.95/138,616.18
  6. Step 6: Final answer
    x = 103,436.19

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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.