Home / 157,778.16-217,725.70-86,144.36

Finding the Fourth Proportional to 157,778.16, 217,725.70 and 86,144.36

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Solution

The fourth proportional to 157,778.16, 217,725.70 and 86,144.36 is: 118,874.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,778.16 : 217,725.70 = 86,144.36 : x
  2. Step 2: Convert to fraction form
    157,778.16/217,725.70 = 86,144.36/x
  3. Step 3: Cross multiply
    157,778.16x = 217,725.70 × 86,144.36
  4. Step 4: Simplify right side
    157,778.16x = 18,755,841,082.05
  5. Step 5: Solve for x
    x = 18,755,841,082.05/157,778.16
  6. Step 6: Final answer
    x = 118,874.76

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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.