Home / 138,730.86-208,093.05-79,523.10

Finding the Fourth Proportional to 138,730.86, 208,093.05 and 79,523.10

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Solution

The fourth proportional to 138,730.86, 208,093.05 and 79,523.10 is: 119,282.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,730.86 : 208,093.05 = 79,523.10 : x
  2. Step 2: Convert to fraction form
    138,730.86/208,093.05 = 79,523.10/x
  3. Step 3: Cross multiply
    138,730.86x = 208,093.05 × 79,523.10
  4. Step 4: Simplify right side
    138,730.86x = 16,548,204,424.46
  5. Step 5: Solve for x
    x = 16,548,204,424.46/138,730.86
  6. Step 6: Final answer
    x = 119,282.79

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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.