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Finding the Fourth Proportional to 133,488.48, 199,893.84 and 80,147.28

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Solution

The fourth proportional to 133,488.48, 199,893.84 and 80,147.28 is: 120,017.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,488.48 : 199,893.84 = 80,147.28 : x
  2. Step 2: Convert to fraction form
    133,488.48/199,893.84 = 80,147.28/x
  3. Step 3: Cross multiply
    133,488.48x = 199,893.84 × 80,147.28
  4. Step 4: Simplify right side
    133,488.48x = 16,020,947,564.76
  5. Step 5: Solve for x
    x = 16,020,947,564.76/133,488.48
  6. Step 6: Final answer
    x = 120,017.45

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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.