Home / 203,129,054.13-280,403,913.57-137,138,942.61

Finding the Fourth Proportional to 203,129,054.13, 280,403,913.57 and 137,138,942.61

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Solution

The fourth proportional to 203,129,054.13, 280,403,913.57 and 137,138,942.61 is: 189,309,679.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,129,054.13 : 280,403,913.57 = 137,138,942.61 : x
  2. Step 2: Convert to fraction form
    203,129,054.13/280,403,913.57 = 137,138,942.61/x
  3. Step 3: Cross multiply
    203,129,054.13x = 280,403,913.57 × 137,138,942.61
  4. Step 4: Simplify right side
    203,129,054.13x = 38,454,296,210,695,632
  5. Step 5: Solve for x
    x = 38,454,296,210,695,632/203,129,054.13
  6. Step 6: Final answer
    x = 189,309,679.88

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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.