Home / 127,717.11-176,255.08-71,128.49

Finding the Fourth Proportional to 127,717.11, 176,255.08 and 71,128.49

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Solution

The fourth proportional to 127,717.11, 176,255.08 and 71,128.49 is: 98,160.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,717.11 : 176,255.08 = 71,128.49 : x
  2. Step 2: Convert to fraction form
    127,717.11/176,255.08 = 71,128.49/x
  3. Step 3: Cross multiply
    127,717.11x = 176,255.08 × 71,128.49
  4. Step 4: Simplify right side
    127,717.11x = 12,536,757,695.23
  5. Step 5: Solve for x
    x = 12,536,757,695.23/127,717.11
  6. Step 6: Final answer
    x = 98,160.36

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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.