Home / 138,948.17-191,748.55-75,286.02

Finding the Fourth Proportional to 138,948.17, 191,748.55 and 75,286.02

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Solution

The fourth proportional to 138,948.17, 191,748.55 and 75,286.02 is: 103,894.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,948.17 : 191,748.55 = 75,286.02 : x
  2. Step 2: Convert to fraction form
    138,948.17/191,748.55 = 75,286.02/x
  3. Step 3: Cross multiply
    138,948.17x = 191,748.55 × 75,286.02
  4. Step 4: Simplify right side
    138,948.17x = 14,435,985,170.27
  5. Step 5: Solve for x
    x = 14,435,985,170.27/138,948.17
  6. Step 6: Final answer
    x = 103,894.75

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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.