Home / 138,687.98-191,388.76-75,025.22

Finding the Fourth Proportional to 138,687.98, 191,388.76 and 75,025.22

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Solution

The fourth proportional to 138,687.98, 191,388.76 and 75,025.22 is: 103,534.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,687.98 : 191,388.76 = 75,025.22 : x
  2. Step 2: Convert to fraction form
    138,687.98/191,388.76 = 75,025.22/x
  3. Step 3: Cross multiply
    138,687.98x = 191,388.76 × 75,025.22
  4. Step 4: Simplify right side
    138,687.98x = 14,358,982,680.02
  5. Step 5: Solve for x
    x = 14,358,982,680.02/138,687.98
  6. Step 6: Final answer
    x = 103,534.45

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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.