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Finding the Fourth Proportional to 127,842.12, 176,422.32 and 71,252.28

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Solution

The fourth proportional to 127,842.12, 176,422.32 and 71,252.28 is: 98,328.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,842.12 : 176,422.32 = 71,252.28 : x
  2. Step 2: Convert to fraction form
    127,842.12/176,422.32 = 71,252.28/x
  3. Step 3: Cross multiply
    127,842.12x = 176,422.32 × 71,252.28
  4. Step 4: Simplify right side
    127,842.12x = 12,570,492,542.89
  5. Step 5: Solve for x
    x = 12,570,492,542.89/127,842.12
  6. Step 6: Final answer
    x = 98,328.25

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.