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Finding the Fourth Proportional to 80,109.88, 120,223.94 and 37,990.10

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Solution

The fourth proportional to 80,109.88, 120,223.94 and 37,990.10 is: 57,013.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,109.88 : 120,223.94 = 37,990.10 : x
  2. Step 2: Convert to fraction form
    80,109.88/120,223.94 = 37,990.10/x
  3. Step 3: Cross multiply
    80,109.88x = 120,223.94 × 37,990.10
  4. Step 4: Simplify right side
    80,109.88x = 4,567,319,502.99
  5. Step 5: Solve for x
    x = 4,567,319,502.99/80,109.88
  6. Step 6: Final answer
    x = 57,013.19

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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.