Home / 157,930.64-217,944.40-86,310.66

Finding the Fourth Proportional to 157,930.64, 217,944.40 and 86,310.66

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Solution

The fourth proportional to 157,930.64, 217,944.40 and 86,310.66 is: 119,108.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,930.64 : 217,944.40 = 86,310.66 : x
  2. Step 2: Convert to fraction form
    157,930.64/217,944.40 = 86,310.66/x
  3. Step 3: Cross multiply
    157,930.64x = 217,944.40 × 86,310.66
  4. Step 4: Simplify right side
    157,930.64x = 18,810,925,527.90
  5. Step 5: Solve for x
    x = 18,810,925,527.90/157,930.64
  6. Step 6: Final answer
    x = 119,108.78

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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.