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Finding the Fourth Proportional to 170,787.40, 256,181.10 and 159,123.40

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Solution

The fourth proportional to 170,787.40, 256,181.10 and 159,123.40 is: 238,685.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,787.40 : 256,181.10 = 159,123.40 : x
  2. Step 2: Convert to fraction form
    170,787.40/256,181.10 = 159,123.40/x
  3. Step 3: Cross multiply
    170,787.40x = 256,181.10 × 159,123.40
  4. Step 4: Simplify right side
    170,787.40x = 40,764,407,647.74
  5. Step 5: Solve for x
    x = 40,764,407,647.74/170,787.40
  6. Step 6: Final answer
    x = 238,685.10

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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.