Home / 157,841.30-217,825.67-86,222.50

Finding the Fourth Proportional to 157,841.30, 217,825.67 and 86,222.50

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Solution

The fourth proportional to 157,841.30, 217,825.67 and 86,222.50 is: 118,989.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,841.30 : 217,825.67 = 86,222.50 : x
  2. Step 2: Convert to fraction form
    157,841.30/217,825.67 = 86,222.50/x
  3. Step 3: Cross multiply
    157,841.30x = 217,825.67 × 86,222.50
  4. Step 4: Simplify right side
    157,841.30x = 18,781,472,311.33
  5. Step 5: Solve for x
    x = 18,781,472,311.33/157,841.30
  6. Step 6: Final answer
    x = 118,989.59

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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.