Home / 138,583.22-191,244.80-74,921

Finding the Fourth Proportional to 138,583.22, 191,244.80 and 74,921

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Solution

The fourth proportional to 138,583.22, 191,244.80 and 74,921 is: 103,390.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,583.22 : 191,244.80 = 74,921 : x
  2. Step 2: Convert to fraction form
    138,583.22/191,244.80 = 74,921/x
  3. Step 3: Cross multiply
    138,583.22x = 191,244.80 × 74,921
  4. Step 4: Simplify right side
    138,583.22x = 14,328,251,286.20
  5. Step 5: Solve for x
    x = 14,328,251,286.20/138,583.22
  6. Step 6: Final answer
    x = 103,390.95

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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.