Home / 138,627.49-191,305.95-74,965.30

Finding the Fourth Proportional to 138,627.49, 191,305.95 and 74,965.30

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Solution

The fourth proportional to 138,627.49, 191,305.95 and 74,965.30 is: 103,452.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,627.49 : 191,305.95 = 74,965.30 : x
  2. Step 2: Convert to fraction form
    138,627.49/191,305.95 = 74,965.30/x
  3. Step 3: Cross multiply
    138,627.49x = 191,305.95 × 74,965.30
  4. Step 4: Simplify right side
    138,627.49x = 14,341,307,933.54
  5. Step 5: Solve for x
    x = 14,341,307,933.54/138,627.49
  6. Step 6: Final answer
    x = 103,452.12

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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.