Home / 138,810.33-191,557.17-75,147.66

Finding the Fourth Proportional to 138,810.33, 191,557.17 and 75,147.66

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Solution

The fourth proportional to 138,810.33, 191,557.17 and 75,147.66 is: 103,703.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,810.33 : 191,557.17 = 75,147.66 : x
  2. Step 2: Convert to fraction form
    138,810.33/191,557.17 = 75,147.66/x
  3. Step 3: Cross multiply
    138,810.33x = 191,557.17 × 75,147.66
  4. Step 4: Simplify right side
    138,810.33x = 14,395,073,081.72
  5. Step 5: Solve for x
    x = 14,395,073,081.72/138,810.33
  6. Step 6: Final answer
    x = 103,703.18

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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.