Home / 127,720.41-176,259.68-71,131.78

Finding the Fourth Proportional to 127,720.41, 176,259.68 and 71,131.78

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Solution

The fourth proportional to 127,720.41, 176,259.68 and 71,131.78 is: 98,164.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,720.41 : 176,259.68 = 71,131.78 : x
  2. Step 2: Convert to fraction form
    127,720.41/176,259.68 = 71,131.78/x
  3. Step 3: Cross multiply
    127,720.41x = 176,259.68 × 71,131.78
  4. Step 4: Simplify right side
    127,720.41x = 12,537,664,912.04
  5. Step 5: Solve for x
    x = 12,537,664,912.04/127,720.41
  6. Step 6: Final answer
    x = 98,164.93

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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.