Home / 156,070.80-233,939.88-81,115.43

Finding the Fourth Proportional to 156,070.80, 233,939.88 and 81,115.43

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Solution

The fourth proportional to 156,070.80, 233,939.88 and 81,115.43 is: 121,586.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,070.80 : 233,939.88 = 81,115.43 : x
  2. Step 2: Convert to fraction form
    156,070.80/233,939.88 = 81,115.43/x
  3. Step 3: Cross multiply
    156,070.80x = 233,939.88 × 81,115.43
  4. Step 4: Simplify right side
    156,070.80x = 18,976,132,790.65
  5. Step 5: Solve for x
    x = 18,976,132,790.65/156,070.80
  6. Step 6: Final answer
    x = 121,586.70

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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.