Home / 138,748.50-191,473.40-75,086.28

Finding the Fourth Proportional to 138,748.50, 191,473.40 and 75,086.28

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Solution

The fourth proportional to 138,748.50, 191,473.40 and 75,086.28 is: 103,619.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,748.50 : 191,473.40 = 75,086.28 : x
  2. Step 2: Convert to fraction form
    138,748.50/191,473.40 = 75,086.28/x
  3. Step 3: Cross multiply
    138,748.50x = 191,473.40 × 75,086.28
  4. Step 4: Simplify right side
    138,748.50x = 14,377,025,324.95
  5. Step 5: Solve for x
    x = 14,377,025,324.95/138,748.50
  6. Step 6: Final answer
    x = 103,619.32

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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.