Home / 157,387.12-217,191.36-85,767.76

Finding the Fourth Proportional to 157,387.12, 217,191.36 and 85,767.76

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Solution

The fourth proportional to 157,387.12, 217,191.36 and 85,767.76 is: 118,357.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,387.12 : 217,191.36 = 85,767.76 : x
  2. Step 2: Convert to fraction form
    157,387.12/217,191.36 = 85,767.76/x
  3. Step 3: Cross multiply
    157,387.12x = 217,191.36 × 85,767.76
  4. Step 4: Simplify right side
    157,387.12x = 18,628,016,438.55
  5. Step 5: Solve for x
    x = 18,628,016,438.55/157,387.12
  6. Step 6: Final answer
    x = 118,357.95

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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.