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Finding the Fourth Proportional to 170,913.32, 256,388.72 and 71,085.32

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Solution

The fourth proportional to 170,913.32, 256,388.72 and 71,085.32 is: 106,635.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,913.32 : 256,388.72 = 71,085.32 : x
  2. Step 2: Convert to fraction form
    170,913.32/256,388.72 = 71,085.32/x
  3. Step 3: Cross multiply
    170,913.32x = 256,388.72 × 71,085.32
  4. Step 4: Simplify right side
    170,913.32x = 18,225,474,205.59
  5. Step 5: Solve for x
    x = 18,225,474,205.59/170,913.32
  6. Step 6: Final answer
    x = 106,635.77

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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.