Home / 149,366.68-206,123.61-81,384.55

Finding the Fourth Proportional to 149,366.68, 206,123.61 and 81,384.55

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Solution

The fourth proportional to 149,366.68, 206,123.61 and 81,384.55 is: 112,309.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,366.68 : 206,123.61 = 81,384.55 : x
  2. Step 2: Convert to fraction form
    149,366.68/206,123.61 = 81,384.55/x
  3. Step 3: Cross multiply
    149,366.68x = 206,123.61 × 81,384.55
  4. Step 4: Simplify right side
    149,366.68x = 16,775,277,244.23
  5. Step 5: Solve for x
    x = 16,775,277,244.23/149,366.68
  6. Step 6: Final answer
    x = 112,309.37

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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.