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Finding the Fourth Proportional to 101,143.20, 151,369.20 and 88,701.60

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Solution

The fourth proportional to 101,143.20, 151,369.20 and 88,701.60 is: 132,749.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,143.20 : 151,369.20 = 88,701.60 : x
  2. Step 2: Convert to fraction form
    101,143.20/151,369.20 = 88,701.60/x
  3. Step 3: Cross multiply
    101,143.20x = 151,369.20 × 88,701.60
  4. Step 4: Simplify right side
    101,143.20x = 13,426,690,230.72
  5. Step 5: Solve for x
    x = 13,426,690,230.72/101,143.20
  6. Step 6: Final answer
    x = 132,749.31

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.