Home / 127,938.56-176,586.87-87,170.12

Finding the Fourth Proportional to 127,938.56, 176,586.87 and 87,170.12

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Solution

The fourth proportional to 127,938.56, 176,586.87 and 87,170.12 is: 120,316.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,938.56 : 176,586.87 = 87,170.12 : x
  2. Step 2: Convert to fraction form
    127,938.56/176,586.87 = 87,170.12/x
  3. Step 3: Cross multiply
    127,938.56x = 176,586.87 × 87,170.12
  4. Step 4: Simplify right side
    127,938.56x = 15,393,098,648.32
  5. Step 5: Solve for x
    x = 15,393,098,648.32/127,938.56
  6. Step 6: Final answer
    x = 120,316.34

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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.