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Finding the Fourth Proportional to 127,728.80, 176,265.60 and 74,044.96

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Solution

The fourth proportional to 127,728.80, 176,265.60 and 74,044.96 is: 102,181.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,728.80 : 176,265.60 = 74,044.96 : x
  2. Step 2: Convert to fraction form
    127,728.80/176,265.60 = 74,044.96/x
  3. Step 3: Cross multiply
    127,728.80x = 176,265.60 × 74,044.96
  4. Step 4: Simplify right side
    127,728.80x = 13,051,579,301.38
  5. Step 5: Solve for x
    x = 13,051,579,301.38/127,728.80
  6. Step 6: Final answer
    x = 102,181.96

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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.