Home / 138,626.91-191,305.59-74,965.16

Finding the Fourth Proportional to 138,626.91, 191,305.59 and 74,965.16

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Solution

The fourth proportional to 138,626.91, 191,305.59 and 74,965.16 is: 103,452.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,626.91 : 191,305.59 = 74,965.16 : x
  2. Step 2: Convert to fraction form
    138,626.91/191,305.59 = 74,965.16/x
  3. Step 3: Cross multiply
    138,626.91x = 191,305.59 × 74,965.16
  4. Step 4: Simplify right side
    138,626.91x = 14,341,253,206.72
  5. Step 5: Solve for x
    x = 14,341,253,206.72/138,626.91
  6. Step 6: Final answer
    x = 103,452.16

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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.