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Finding the Fourth Proportional to 160,309.40, 221,214.78 and 88,687.90

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Solution

The fourth proportional to 160,309.40, 221,214.78 and 88,687.90 is: 122,382.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    160,309.40 : 221,214.78 = 88,687.90 : x
  2. Step 2: Convert to fraction form
    160,309.40/221,214.78 = 88,687.90/x
  3. Step 3: Cross multiply
    160,309.40x = 221,214.78 × 88,687.90
  4. Step 4: Simplify right side
    160,309.40x = 19,619,074,287.16
  5. Step 5: Solve for x
    x = 19,619,074,287.16/160,309.40
  6. Step 6: Final answer
    x = 122,382.56

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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.