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Finding the Fourth Proportional to 170,856.60, 256,236.47 and 70,893.11

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Solution

The fourth proportional to 170,856.60, 256,236.47 and 70,893.11 is: 106,319.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,856.60 : 256,236.47 = 70,893.11 : x
  2. Step 2: Convert to fraction form
    170,856.60/256,236.47 = 70,893.11/x
  3. Step 3: Cross multiply
    170,856.60x = 256,236.47 × 70,893.11
  4. Step 4: Simplify right side
    170,856.60x = 18,165,398,618.07
  5. Step 5: Solve for x
    x = 18,165,398,618.07/170,856.60
  6. Step 6: Final answer
    x = 106,319.56

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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.