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Finding the Fourth Proportional to 250,080.19, 374,931.63 and 81,499.85

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Solution

The fourth proportional to 250,080.19, 374,931.63 and 81,499.85 is: 122,188.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,080.19 : 374,931.63 = 81,499.85 : x
  2. Step 2: Convert to fraction form
    250,080.19/374,931.63 = 81,499.85/x
  3. Step 3: Cross multiply
    250,080.19x = 374,931.63 × 81,499.85
  4. Step 4: Simplify right side
    250,080.19x = 30,556,872,542.58
  5. Step 5: Solve for x
    x = 30,556,872,542.58/250,080.19
  6. Step 6: Final answer
    x = 122,188.30

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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.