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Finding the Fourth Proportional to 127,859.88, 176,374.38 and 80,030.19

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Solution

The fourth proportional to 127,859.88, 176,374.38 and 80,030.19 is: 110,396.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,859.88 : 176,374.38 = 80,030.19 : x
  2. Step 2: Convert to fraction form
    127,859.88/176,374.38 = 80,030.19/x
  3. Step 3: Cross multiply
    127,859.88x = 176,374.38 × 80,030.19
  4. Step 4: Simplify right side
    127,859.88x = 14,115,275,142.53
  5. Step 5: Solve for x
    x = 14,115,275,142.53/127,859.88
  6. Step 6: Final answer
    x = 110,396.44

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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.