Home / 127,720.20-176,259.32-71,131.56

Finding the Fourth Proportional to 127,720.20, 176,259.32 and 71,131.56

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Solution

The fourth proportional to 127,720.20, 176,259.32 and 71,131.56 is: 98,164.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,720.20 : 176,259.32 = 71,131.56 : x
  2. Step 2: Convert to fraction form
    127,720.20/176,259.32 = 71,131.56/x
  3. Step 3: Cross multiply
    127,720.20x = 176,259.32 × 71,131.56
  4. Step 4: Simplify right side
    127,720.20x = 12,537,600,396.14
  5. Step 5: Solve for x
    x = 12,537,600,396.14/127,720.20
  6. Step 6: Final answer
    x = 98,164.58

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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.