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Finding the Fourth Proportional to 135,029.80, 202,544.70 and 72,044.20

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Solution

The fourth proportional to 135,029.80, 202,544.70 and 72,044.20 is: 108,066.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,029.80 : 202,544.70 = 72,044.20 : x
  2. Step 2: Convert to fraction form
    135,029.80/202,544.70 = 72,044.20/x
  3. Step 3: Cross multiply
    135,029.80x = 202,544.70 × 72,044.20
  4. Step 4: Simplify right side
    135,029.80x = 14,592,170,875.74
  5. Step 5: Solve for x
    x = 14,592,170,875.74/135,029.80
  6. Step 6: Final answer
    x = 108,066.30

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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.