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Finding the Fourth Proportional to 202,991.20, 280,122.06 and 112,350.88

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Solution

The fourth proportional to 202,991.20, 280,122.06 and 112,350.88 is: 155,041.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,991.20 : 280,122.06 = 112,350.88 : x
  2. Step 2: Convert to fraction form
    202,991.20/280,122.06 = 112,350.88/x
  3. Step 3: Cross multiply
    202,991.20x = 280,122.06 × 112,350.88
  4. Step 4: Simplify right side
    202,991.20x = 31,471,959,948.41
  5. Step 5: Solve for x
    x = 31,471,959,948.41/202,991.20
  6. Step 6: Final answer
    x = 155,041.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.