Home / 138,948.60-191,749.23-75,286.38

Finding the Fourth Proportional to 138,948.60, 191,749.23 and 75,286.38

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Solution

The fourth proportional to 138,948.60, 191,749.23 and 75,286.38 is: 103,895.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,948.60 : 191,749.23 = 75,286.38 : x
  2. Step 2: Convert to fraction form
    138,948.60/191,749.23 = 75,286.38/x
  3. Step 3: Cross multiply
    138,948.60x = 191,749.23 × 75,286.38
  4. Step 4: Simplify right side
    138,948.60x = 14,436,105,394.49
  5. Step 5: Solve for x
    x = 14,436,105,394.49/138,948.60
  6. Step 6: Final answer
    x = 103,895.29

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1.5x scale

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.