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Finding the Fourth Proportional to 144,083.69, 216,125.31 and 80,082.53

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Solution

The fourth proportional to 144,083.69, 216,125.31 and 80,082.53 is: 120,123.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,083.69 : 216,125.31 = 80,082.53 : x
  2. Step 2: Convert to fraction form
    144,083.69/216,125.31 = 80,082.53/x
  3. Step 3: Cross multiply
    144,083.69x = 216,125.31 × 80,082.53
  4. Step 4: Simplify right side
    144,083.69x = 17,307,861,621.83
  5. Step 5: Solve for x
    x = 17,307,861,621.83/144,083.69
  6. Step 6: Final answer
    x = 120,123.67

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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.