Home / 137,691.48-189,998.76-77,249.52

Finding the Fourth Proportional to 137,691.48, 189,998.76 and 77,249.52

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Solution

The fourth proportional to 137,691.48, 189,998.76 and 77,249.52 is: 106,595.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,691.48 : 189,998.76 = 77,249.52 : x
  2. Step 2: Convert to fraction form
    137,691.48/189,998.76 = 77,249.52/x
  3. Step 3: Cross multiply
    137,691.48x = 189,998.76 × 77,249.52
  4. Step 4: Simplify right side
    137,691.48x = 14,677,313,010.60
  5. Step 5: Solve for x
    x = 14,677,313,010.60/137,691.48
  6. Step 6: Final answer
    x = 106,595.65

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1.5x scale

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.