Home / 129,620.20-194,430.30-76,476.10

Finding the Fourth Proportional to 129,620.20, 194,430.30 and 76,476.10

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Solution

The fourth proportional to 129,620.20, 194,430.30 and 76,476.10 is: 114,714.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,620.20 : 194,430.30 = 76,476.10 : x
  2. Step 2: Convert to fraction form
    129,620.20/194,430.30 = 76,476.10/x
  3. Step 3: Cross multiply
    129,620.20x = 194,430.30 × 76,476.10
  4. Step 4: Simplify right side
    129,620.20x = 14,869,271,065.83
  5. Step 5: Solve for x
    x = 14,869,271,065.83/129,620.20
  6. Step 6: Final answer
    x = 114,714.15

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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.