Home / 127,280.80-190,532.40-99,287.20

Finding the Fourth Proportional to 127,280.80, 190,532.40 and 99,287.20

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Solution

The fourth proportional to 127,280.80, 190,532.40 and 99,287.20 is: 148,627.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,280.80 : 190,532.40 = 99,287.20 : x
  2. Step 2: Convert to fraction form
    127,280.80/190,532.40 = 99,287.20/x
  3. Step 3: Cross multiply
    127,280.80x = 190,532.40 × 99,287.20
  4. Step 4: Simplify right side
    127,280.80x = 18,917,428,505.28
  5. Step 5: Solve for x
    x = 18,917,428,505.28/127,280.80
  6. Step 6: Final answer
    x = 148,627.51

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.