Home / 134,899.20-202,348.80-72,691.20

Finding the Fourth Proportional to 134,899.20, 202,348.80 and 72,691.20

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Solution

The fourth proportional to 134,899.20, 202,348.80 and 72,691.20 is: 109,036.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,899.20 : 202,348.80 = 72,691.20 : x
  2. Step 2: Convert to fraction form
    134,899.20/202,348.80 = 72,691.20/x
  3. Step 3: Cross multiply
    134,899.20x = 202,348.80 × 72,691.20
  4. Step 4: Simplify right side
    134,899.20x = 14,708,977,090.56
  5. Step 5: Solve for x
    x = 14,708,977,090.56/134,899.20
  6. Step 6: Final answer
    x = 109,036.80

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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.