Home / 127,742.40-176,279.76-71,152.56

Finding the Fourth Proportional to 127,742.40, 176,279.76 and 71,152.56

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Solution

The fourth proportional to 127,742.40, 176,279.76 and 71,152.56 is: 98,187.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,742.40 : 176,279.76 = 71,152.56 : x
  2. Step 2: Convert to fraction form
    127,742.40/176,279.76 = 71,152.56/x
  3. Step 3: Cross multiply
    127,742.40x = 176,279.76 × 71,152.56
  4. Step 4: Simplify right side
    127,742.40x = 12,542,756,200.19
  5. Step 5: Solve for x
    x = 12,542,756,200.19/127,742.40
  6. Step 6: Final answer
    x = 98,187.89

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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.