Home / 138,583.10-191,244.62-74,920.88

Finding the Fourth Proportional to 138,583.10, 191,244.62 and 74,920.88

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Solution

The fourth proportional to 138,583.10, 191,244.62 and 74,920.88 is: 103,390.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,583.10 : 191,244.62 = 74,920.88 : x
  2. Step 2: Convert to fraction form
    138,583.10/191,244.62 = 74,920.88/x
  3. Step 3: Cross multiply
    138,583.10x = 191,244.62 × 74,920.88
  4. Step 4: Simplify right side
    138,583.10x = 14,328,214,456.74
  5. Step 5: Solve for x
    x = 14,328,214,456.74/138,583.10
  6. Step 6: Final answer
    x = 103,390.78

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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.