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Finding the Fourth Proportional to 75,269.20, 112,903.80 and 74,102.80

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Solution

The fourth proportional to 75,269.20, 112,903.80 and 74,102.80 is: 111,154.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,269.20 : 112,903.80 = 74,102.80 : x
  2. Step 2: Convert to fraction form
    75,269.20/112,903.80 = 74,102.80/x
  3. Step 3: Cross multiply
    75,269.20x = 112,903.80 × 74,102.80
  4. Step 4: Simplify right side
    75,269.20x = 8,366,487,710.64
  5. Step 5: Solve for x
    x = 8,366,487,710.64/75,269.20
  6. Step 6: Final answer
    x = 111,154.20

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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.