Home / 157,758.12-217,704.24-86,137.38

Finding the Fourth Proportional to 157,758.12, 217,704.24 and 86,137.38

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Solution

The fourth proportional to 157,758.12, 217,704.24 and 86,137.38 is: 118,868.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,758.12 : 217,704.24 = 86,137.38 : x
  2. Step 2: Convert to fraction form
    157,758.12/217,704.24 = 86,137.38/x
  3. Step 3: Cross multiply
    157,758.12x = 217,704.24 × 86,137.38
  4. Step 4: Simplify right side
    157,758.12x = 18,752,472,848.49
  5. Step 5: Solve for x
    x = 18,752,472,848.49/157,758.12
  6. Step 6: Final answer
    x = 118,868.51

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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.