Home / 138,812.89-191,561.85-75,150.70

Finding the Fourth Proportional to 138,812.89, 191,561.85 and 75,150.70

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Solution

The fourth proportional to 138,812.89, 191,561.85 and 75,150.70 is: 103,708.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,812.89 : 191,561.85 = 75,150.70 : x
  2. Step 2: Convert to fraction form
    138,812.89/191,561.85 = 75,150.70/x
  3. Step 3: Cross multiply
    138,812.89x = 191,561.85 × 75,150.70
  4. Step 4: Simplify right side
    138,812.89x = 14,396,007,120.80
  5. Step 5: Solve for x
    x = 14,396,007,120.80/138,812.89
  6. Step 6: Final answer
    x = 103,708.00

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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.