Home / 138,918.11-191,707.92-75,255.93

Finding the Fourth Proportional to 138,918.11, 191,707.92 and 75,255.93

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Solution

The fourth proportional to 138,918.11, 191,707.92 and 75,255.93 is: 103,853.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,918.11 : 191,707.92 = 75,255.93 : x
  2. Step 2: Convert to fraction form
    138,918.11/191,707.92 = 75,255.93/x
  3. Step 3: Cross multiply
    138,918.11x = 191,707.92 × 75,255.93
  4. Step 4: Simplify right side
    138,918.11x = 14,427,157,807.97
  5. Step 5: Solve for x
    x = 14,427,157,807.97/138,918.11
  6. Step 6: Final answer
    x = 103,853.69

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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.