Home / 115,109.10-172,672.16-40,220.55

Finding the Fourth Proportional to 115,109.10, 172,672.16 and 40,220.55

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Solution

The fourth proportional to 115,109.10, 172,672.16 and 40,220.55 is: 60,333.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,109.10 : 172,672.16 = 40,220.55 : x
  2. Step 2: Convert to fraction form
    115,109.10/172,672.16 = 40,220.55/x
  3. Step 3: Cross multiply
    115,109.10x = 172,672.16 × 40,220.55
  4. Step 4: Simplify right side
    115,109.10x = 6,944,969,043.79
  5. Step 5: Solve for x
    x = 6,944,969,043.79/115,109.10
  6. Step 6: Final answer
    x = 60,333.80

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1.5x scale

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.