Home / 127,731.33-176,274.63-71,142.69

Finding the Fourth Proportional to 127,731.33, 176,274.63 and 71,142.69

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Solution

The fourth proportional to 127,731.33, 176,274.63 and 71,142.69 is: 98,179.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,731.33 : 176,274.63 = 71,142.69 : x
  2. Step 2: Convert to fraction form
    127,731.33/176,274.63 = 71,142.69/x
  3. Step 3: Cross multiply
    127,731.33x = 176,274.63 × 71,142.69
  4. Step 4: Simplify right side
    127,731.33x = 12,540,651,356.95
  5. Step 5: Solve for x
    x = 12,540,651,356.95/127,731.33
  6. Step 6: Final answer
    x = 98,179.92

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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.