Home / 157,647.15-217,557.68-86,031.78

Finding the Fourth Proportional to 157,647.15, 217,557.68 and 86,031.78

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Solution

The fourth proportional to 157,647.15, 217,557.68 and 86,031.78 is: 118,726.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,647.15 : 217,557.68 = 86,031.78 : x
  2. Step 2: Convert to fraction form
    157,647.15/217,557.68 = 86,031.78/x
  3. Step 3: Cross multiply
    157,647.15x = 217,557.68 × 86,031.78
  4. Step 4: Simplify right side
    157,647.15x = 18,716,874,032.91
  5. Step 5: Solve for x
    x = 18,716,874,032.91/157,647.15
  6. Step 6: Final answer
    x = 118,726.37

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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.