Home / 127,703.88-176,231.16-71,128.62

Finding the Fourth Proportional to 127,703.88, 176,231.16 and 71,128.62

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Solution

The fourth proportional to 127,703.88, 176,231.16 and 71,128.62 is: 98,157.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,703.88 : 176,231.16 = 71,128.62 : x
  2. Step 2: Convert to fraction form
    127,703.88/176,231.16 = 71,128.62/x
  3. Step 3: Cross multiply
    127,703.88x = 176,231.16 × 71,128.62
  4. Step 4: Simplify right side
    127,703.88x = 12,535,079,211.80
  5. Step 5: Solve for x
    x = 12,535,079,211.80/127,703.88
  6. Step 6: Final answer
    x = 98,157.39

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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.