Home / 129,162.80-193,744.20-99,638.30

Finding the Fourth Proportional to 129,162.80, 193,744.20 and 99,638.30

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Solution

The fourth proportional to 129,162.80, 193,744.20 and 99,638.30 is: 149,457.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,162.80 : 193,744.20 = 99,638.30 : x
  2. Step 2: Convert to fraction form
    129,162.80/193,744.20 = 99,638.30/x
  3. Step 3: Cross multiply
    129,162.80x = 193,744.20 × 99,638.30
  4. Step 4: Simplify right side
    129,162.80x = 19,304,342,722.86
  5. Step 5: Solve for x
    x = 19,304,342,722.86/129,162.80
  6. Step 6: Final answer
    x = 149,457.45

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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.