Home / 138,616.22-191,290.25-74,953.86

Finding the Fourth Proportional to 138,616.22, 191,290.25 and 74,953.86

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Solution

The fourth proportional to 138,616.22, 191,290.25 and 74,953.86 is: 103,436.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,616.22 : 191,290.25 = 74,953.86 : x
  2. Step 2: Convert to fraction form
    138,616.22/191,290.25 = 74,953.86/x
  3. Step 3: Cross multiply
    138,616.22x = 191,290.25 × 74,953.86
  4. Step 4: Simplify right side
    138,616.22x = 14,337,942,953.11
  5. Step 5: Solve for x
    x = 14,337,942,953.11/138,616.22
  6. Step 6: Final answer
    x = 103,436.26

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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.