Home / 147,787.88-203,948.08-80,719.88

Finding the Fourth Proportional to 147,787.88, 203,948.08 and 80,719.88

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Solution

The fourth proportional to 147,787.88, 203,948.08 and 80,719.88 is: 111,393.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,787.88 : 203,948.08 = 80,719.88 : x
  2. Step 2: Convert to fraction form
    147,787.88/203,948.08 = 80,719.88/x
  3. Step 3: Cross multiply
    147,787.88x = 203,948.08 × 80,719.88
  4. Step 4: Simplify right side
    147,787.88x = 16,462,663,322.29
  5. Step 5: Solve for x
    x = 16,462,663,322.29/147,787.88
  6. Step 6: Final answer
    x = 111,393.87

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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.