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Finding the Fourth Proportional to 127,182.72, 190,802.88 and 67,987.20

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Solution

The fourth proportional to 127,182.72, 190,802.88 and 67,987.20 is: 101,996.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,182.72 : 190,802.88 = 67,987.20 : x
  2. Step 2: Convert to fraction form
    127,182.72/190,802.88 = 67,987.20/x
  3. Step 3: Cross multiply
    127,182.72x = 190,802.88 × 67,987.20
  4. Step 4: Simplify right side
    127,182.72x = 12,972,153,563.14
  5. Step 5: Solve for x
    x = 12,972,153,563.14/127,182.72
  6. Step 6: Final answer
    x = 101,996.20

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1.5x scale

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.