Home / 131,324.46-181,227.60-77,628.84

Finding the Fourth Proportional to 131,324.46, 181,227.60 and 77,628.84

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Solution

The fourth proportional to 131,324.46, 181,227.60 and 77,628.84 is: 107,127.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,324.46 : 181,227.60 = 77,628.84 : x
  2. Step 2: Convert to fraction form
    131,324.46/181,227.60 = 77,628.84/x
  3. Step 3: Cross multiply
    131,324.46x = 181,227.60 × 77,628.84
  4. Step 4: Simplify right side
    131,324.46x = 14,068,488,363.98
  5. Step 5: Solve for x
    x = 14,068,488,363.98/131,324.46
  6. Step 6: Final answer
    x = 107,127.71

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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.