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Finding the Fourth Proportional to 75,293.20, 112,939.80 and 74,126.80

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Solution

The fourth proportional to 75,293.20, 112,939.80 and 74,126.80 is: 111,190.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,293.20 : 112,939.80 = 74,126.80 : x
  2. Step 2: Convert to fraction form
    75,293.20/112,939.80 = 74,126.80/x
  3. Step 3: Cross multiply
    75,293.20x = 112,939.80 × 74,126.80
  4. Step 4: Simplify right side
    75,293.20x = 8,371,865,966.64
  5. Step 5: Solve for x
    x = 8,371,865,966.64/75,293.20
  6. Step 6: Final answer
    x = 111,190.20

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1.5x scale

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.