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Finding the Fourth Proportional to 170,904.10, 256,356.15 and 100,920.10

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Solution

The fourth proportional to 170,904.10, 256,356.15 and 100,920.10 is: 151,380.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,904.10 : 256,356.15 = 100,920.10 : x
  2. Step 2: Convert to fraction form
    170,904.10/256,356.15 = 100,920.10/x
  3. Step 3: Cross multiply
    170,904.10x = 256,356.15 × 100,920.10
  4. Step 4: Simplify right side
    170,904.10x = 25,871,488,293.62
  5. Step 5: Solve for x
    x = 25,871,488,293.62/170,904.10
  6. Step 6: Final answer
    x = 151,380.15

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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.