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Finding the Fourth Proportional to 170,900.10, 256,350.15 and 100,916.10

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Solution

The fourth proportional to 170,900.10, 256,350.15 and 100,916.10 is: 151,374.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,900.10 : 256,350.15 = 100,916.10 : x
  2. Step 2: Convert to fraction form
    170,900.10/256,350.15 = 100,916.10/x
  3. Step 3: Cross multiply
    170,900.10x = 256,350.15 × 100,916.10
  4. Step 4: Simplify right side
    170,900.10x = 25,869,857,372.42
  5. Step 5: Solve for x
    x = 25,869,857,372.42/170,900.10
  6. Step 6: Final answer
    x = 151,374.15

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1.5x scale

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.