Home / 159,531.35-220,150.42-86,934.87

Finding the Fourth Proportional to 159,531.35, 220,150.42 and 86,934.87

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Solution

The fourth proportional to 159,531.35, 220,150.42 and 86,934.87 is: 119,968.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,531.35 : 220,150.42 = 86,934.87 : x
  2. Step 2: Convert to fraction form
    159,531.35/220,150.42 = 86,934.87/x
  3. Step 3: Cross multiply
    159,531.35x = 220,150.42 × 86,934.87
  4. Step 4: Simplify right side
    159,531.35x = 19,138,747,708.47
  5. Step 5: Solve for x
    x = 19,138,747,708.47/159,531.35
  6. Step 6: Final answer
    x = 119,968.57

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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.