Home / 103,139.22-154,753.28-55,787.65

Finding the Fourth Proportional to 103,139.22, 154,753.28 and 55,787.65

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Solution

The fourth proportional to 103,139.22, 154,753.28 and 55,787.65 is: 83,705.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,139.22 : 154,753.28 = 55,787.65 : x
  2. Step 2: Convert to fraction form
    103,139.22/154,753.28 = 55,787.65/x
  3. Step 3: Cross multiply
    103,139.22x = 154,753.28 × 55,787.65
  4. Step 4: Simplify right side
    103,139.22x = 8,633,321,960.46
  5. Step 5: Solve for x
    x = 8,633,321,960.46/103,139.22
  6. Step 6: Final answer
    x = 83,705.52

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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.