Home / 111,787.46-154,137.66-89,108.88

Finding the Fourth Proportional to 111,787.46, 154,137.66 and 89,108.88

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Solution

The fourth proportional to 111,787.46, 154,137.66 and 89,108.88 is: 122,867.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,787.46 : 154,137.66 = 89,108.88 : x
  2. Step 2: Convert to fraction form
    111,787.46/154,137.66 = 89,108.88/x
  3. Step 3: Cross multiply
    111,787.46x = 154,137.66 × 89,108.88
  4. Step 4: Simplify right side
    111,787.46x = 13,735,034,248.42
  5. Step 5: Solve for x
    x = 13,735,034,248.42/111,787.46
  6. Step 6: Final answer
    x = 122,867.40

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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.