Home / 127,717.69-176,255.88-71,129.06

Finding the Fourth Proportional to 127,717.69, 176,255.88 and 71,129.06

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Solution

The fourth proportional to 127,717.69, 176,255.88 and 71,129.06 is: 98,161.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,717.69 : 176,255.88 = 71,129.06 : x
  2. Step 2: Convert to fraction form
    127,717.69/176,255.88 = 71,129.06/x
  3. Step 3: Cross multiply
    127,717.69x = 176,255.88 × 71,129.06
  4. Step 4: Simplify right side
    127,717.69x = 12,536,915,504.51
  5. Step 5: Solve for x
    x = 12,536,915,504.51/127,717.69
  6. Step 6: Final answer
    x = 98,161.15

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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.