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Finding the Fourth Proportional to 139,080.03, 208,550.17 and 68,008.20

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Solution

The fourth proportional to 139,080.03, 208,550.17 and 68,008.20 is: 101,978.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,080.03 : 208,550.17 = 68,008.20 : x
  2. Step 2: Convert to fraction form
    139,080.03/208,550.17 = 68,008.20/x
  3. Step 3: Cross multiply
    139,080.03x = 208,550.17 × 68,008.20
  4. Step 4: Simplify right side
    139,080.03x = 14,183,121,671.39
  5. Step 5: Solve for x
    x = 14,183,121,671.39/139,080.03
  6. Step 6: Final answer
    x = 101,978.13

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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.