Home / 143,615.28-198,160.08-86,993.76

Finding the Fourth Proportional to 143,615.28, 198,160.08 and 86,993.76

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Solution

The fourth proportional to 143,615.28, 198,160.08 and 86,993.76 is: 120,033.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,615.28 : 198,160.08 = 86,993.76 : x
  2. Step 2: Convert to fraction form
    143,615.28/198,160.08 = 86,993.76/x
  3. Step 3: Cross multiply
    143,615.28x = 198,160.08 × 86,993.76
  4. Step 4: Simplify right side
    143,615.28x = 17,238,690,441.10
  5. Step 5: Solve for x
    x = 17,238,690,441.10/143,615.28
  6. Step 6: Final answer
    x = 120,033.82

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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.