Home / 131,123.71-180,979.37-83,367.73

Finding the Fourth Proportional to 131,123.71, 180,979.37 and 83,367.73

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Solution

The fourth proportional to 131,123.71, 180,979.37 and 83,367.73 is: 115,065.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,123.71 : 180,979.37 = 83,367.73 : x
  2. Step 2: Convert to fraction form
    131,123.71/180,979.37 = 83,367.73/x
  3. Step 3: Cross multiply
    131,123.71x = 180,979.37 × 83,367.73
  4. Step 4: Simplify right side
    131,123.71x = 15,087,839,009.70
  5. Step 5: Solve for x
    x = 15,087,839,009.70/131,123.71
  6. Step 6: Final answer
    x = 115,065.68

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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.