Home / 138,853.24-191,618.36-75,191.04

Finding the Fourth Proportional to 138,853.24, 191,618.36 and 75,191.04

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Solution

The fourth proportional to 138,853.24, 191,618.36 and 75,191.04 is: 103,764.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,853.24 : 191,618.36 = 75,191.04 : x
  2. Step 2: Convert to fraction form
    138,853.24/191,618.36 = 75,191.04/x
  3. Step 3: Cross multiply
    138,853.24x = 191,618.36 × 75,191.04
  4. Step 4: Simplify right side
    138,853.24x = 14,407,983,771.49
  5. Step 5: Solve for x
    x = 14,407,983,771.49/138,853.24
  6. Step 6: Final answer
    x = 103,764.12

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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.