Home / 150,380.12-207,510.78-86,705.62

Finding the Fourth Proportional to 150,380.12, 207,510.78 and 86,705.62

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Solution

The fourth proportional to 150,380.12, 207,510.78 and 86,705.62 is: 119,645.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    150,380.12 : 207,510.78 = 86,705.62 : x
  2. Step 2: Convert to fraction form
    150,380.12/207,510.78 = 86,705.62/x
  3. Step 3: Cross multiply
    150,380.12x = 207,510.78 × 86,705.62
  4. Step 4: Simplify right side
    150,380.12x = 17,992,350,836.58
  5. Step 5: Solve for x
    x = 17,992,350,836.58/150,380.12
  6. Step 6: Final answer
    x = 119,645.81

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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.