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Finding the Fourth Proportional to 157,787.95, 217,718.58 and 89,800.95

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Solution

The fourth proportional to 157,787.95, 217,718.58 and 89,800.95 is: 123,908.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,787.95 : 217,718.58 = 89,800.95 : x
  2. Step 2: Convert to fraction form
    157,787.95/217,718.58 = 89,800.95/x
  3. Step 3: Cross multiply
    157,787.95x = 217,718.58 × 89,800.95
  4. Step 4: Simplify right side
    157,787.95x = 19,551,336,469.85
  5. Step 5: Solve for x
    x = 19,551,336,469.85/157,787.95
  6. Step 6: Final answer
    x = 123,908.93

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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.