Home / 127,717.31-176,255.36-71,128.69

Finding the Fourth Proportional to 127,717.31, 176,255.36 and 71,128.69

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Solution

The fourth proportional to 127,717.31, 176,255.36 and 71,128.69 is: 98,160.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,717.31 : 176,255.36 = 71,128.69 : x
  2. Step 2: Convert to fraction form
    127,717.31/176,255.36 = 71,128.69/x
  3. Step 3: Cross multiply
    127,717.31x = 176,255.36 × 71,128.69
  4. Step 4: Simplify right side
    127,717.31x = 12,536,812,332.73
  5. Step 5: Solve for x
    x = 12,536,812,332.73/127,717.31
  6. Step 6: Final answer
    x = 98,160.63

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1.5x scale

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.