Home / 138,853.07-191,617.33-75,190.91

Finding the Fourth Proportional to 138,853.07, 191,617.33 and 75,190.91

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Solution

The fourth proportional to 138,853.07, 191,617.33 and 75,190.91 is: 103,763.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,853.07 : 191,617.33 = 75,190.91 : x
  2. Step 2: Convert to fraction form
    138,853.07/191,617.33 = 75,190.91/x
  3. Step 3: Cross multiply
    138,853.07x = 191,617.33 × 75,190.91
  4. Step 4: Simplify right side
    138,853.07x = 14,407,881,414.47
  5. Step 5: Solve for x
    x = 14,407,881,414.47/138,853.07
  6. Step 6: Final answer
    x = 103,763.51

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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.