Home / 127,704.09-176,231.65-71,115.47

Finding the Fourth Proportional to 127,704.09, 176,231.65 and 71,115.47

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Solution

The fourth proportional to 127,704.09, 176,231.65 and 71,115.47 is: 98,139.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,704.09 : 176,231.65 = 71,115.47 : x
  2. Step 2: Convert to fraction form
    127,704.09/176,231.65 = 71,115.47/x
  3. Step 3: Cross multiply
    127,704.09x = 176,231.65 × 71,115.47
  4. Step 4: Simplify right side
    127,704.09x = 12,532,796,353.89
  5. Step 5: Solve for x
    x = 12,532,796,353.89/127,704.09
  6. Step 6: Final answer
    x = 98,139.35

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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.