Home / 157,757.13-217,713.66-86,143.80

Finding the Fourth Proportional to 157,757.13, 217,713.66 and 86,143.80

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Solution

The fourth proportional to 157,757.13, 217,713.66 and 86,143.80 is: 118,883.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,757.13 : 217,713.66 = 86,143.80 : x
  2. Step 2: Convert to fraction form
    157,757.13/217,713.66 = 86,143.80/x
  3. Step 3: Cross multiply
    157,757.13x = 217,713.66 × 86,143.80
  4. Step 4: Simplify right side
    157,757.13x = 18,754,681,984.31
  5. Step 5: Solve for x
    x = 18,754,681,984.31/157,757.13
  6. Step 6: Final answer
    x = 118,883.26

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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.