Home / 120,769.16-180,877.84-57,633.62

Finding the Fourth Proportional to 120,769.16, 180,877.84 and 57,633.62

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Solution

The fourth proportional to 120,769.16, 180,877.84 and 57,633.62 is: 86,318.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,769.16 : 180,877.84 = 57,633.62 : x
  2. Step 2: Convert to fraction form
    120,769.16/180,877.84 = 57,633.62/x
  3. Step 3: Cross multiply
    120,769.16x = 180,877.84 × 57,633.62
  4. Step 4: Simplify right side
    120,769.16x = 10,424,644,696.98
  5. Step 5: Solve for x
    x = 10,424,644,696.98/120,769.16
  6. Step 6: Final answer
    x = 86,318.76

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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.