Home / 157,811.59-217,776.62-86,191.89

Finding the Fourth Proportional to 157,811.59, 217,776.62 and 86,191.89

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Solution

The fourth proportional to 157,811.59, 217,776.62 and 86,191.89 is: 118,942.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,811.59 : 217,776.62 = 86,191.89 : x
  2. Step 2: Convert to fraction form
    157,811.59/217,776.62 = 86,191.89/x
  3. Step 3: Cross multiply
    157,811.59x = 217,776.62 × 86,191.89
  4. Step 4: Simplify right side
    157,811.59x = 18,770,578,475.61
  5. Step 5: Solve for x
    x = 18,770,578,475.61/157,811.59
  6. Step 6: Final answer
    x = 118,942.97

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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.