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Finding the Fourth Proportional to 127,473.60, 175,957.20 and 77,172.56

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Solution

The fourth proportional to 127,473.60, 175,957.20 and 77,172.56 is: 106,524.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,473.60 : 175,957.20 = 77,172.56 : x
  2. Step 2: Convert to fraction form
    127,473.60/175,957.20 = 77,172.56/x
  3. Step 3: Cross multiply
    127,473.60x = 175,957.20 × 77,172.56
  4. Step 4: Simplify right side
    127,473.60x = 13,579,067,574.43
  5. Step 5: Solve for x
    x = 13,579,067,574.43/127,473.60
  6. Step 6: Final answer
    x = 106,524.55

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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.