Home / 75,331.20-112,996.80-19,171.20

Finding the Fourth Proportional to 75,331.20, 112,996.80 and 19,171.20

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Solution

The fourth proportional to 75,331.20, 112,996.80 and 19,171.20 is: 28,756.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,331.20 : 112,996.80 = 19,171.20 : x
  2. Step 2: Convert to fraction form
    75,331.20/112,996.80 = 19,171.20/x
  3. Step 3: Cross multiply
    75,331.20x = 112,996.80 × 19,171.20
  4. Step 4: Simplify right side
    75,331.20x = 2,166,284,252.16
  5. Step 5: Solve for x
    x = 2,166,284,252.16/75,331.20
  6. Step 6: Final answer
    x = 28,756.80

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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.