Home / 138,812.18-191,562.15-75,151.32

Finding the Fourth Proportional to 138,812.18, 191,562.15 and 75,151.32

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Solution

The fourth proportional to 138,812.18, 191,562.15 and 75,151.32 is: 103,709.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,812.18 : 191,562.15 = 75,151.32 : x
  2. Step 2: Convert to fraction form
    138,812.18/191,562.15 = 75,151.32/x
  3. Step 3: Cross multiply
    138,812.18x = 191,562.15 × 75,151.32
  4. Step 4: Simplify right side
    138,812.18x = 14,396,148,434.54
  5. Step 5: Solve for x
    x = 14,396,148,434.54/138,812.18
  6. Step 6: Final answer
    x = 103,709.55

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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.