Home / 139,231,210.12-192,127,821.76-80,497,660.25

Finding the Fourth Proportional to 139,231,210.12, 192,127,821.76 and 80,497,660.25

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Solution

The fourth proportional to 139,231,210.12, 192,127,821.76 and 80,497,660.25 is: 111,080,267.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,231,210.12 : 192,127,821.76 = 80,497,660.25 : x
  2. Step 2: Convert to fraction form
    139,231,210.12/192,127,821.76 = 80,497,660.25/x
  3. Step 3: Cross multiply
    139,231,210.12x = 192,127,821.76 × 80,497,660.25
  4. Step 4: Simplify right side
    139,231,210.12x = 15,465,840,121,189,978
  5. Step 5: Solve for x
    x = 15,465,840,121,189,978/139,231,210.12
  6. Step 6: Final answer
    x = 111,080,267.91

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.