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Finding the Fourth Proportional to 108,657.20, 162,856.20 and 56,039.60

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Solution

The fourth proportional to 108,657.20, 162,856.20 and 56,039.60 is: 83,992.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,657.20 : 162,856.20 = 56,039.60 : x
  2. Step 2: Convert to fraction form
    108,657.20/162,856.20 = 56,039.60/x
  3. Step 3: Cross multiply
    108,657.20x = 162,856.20 × 56,039.60
  4. Step 4: Simplify right side
    108,657.20x = 9,126,396,305.52
  5. Step 5: Solve for x
    x = 9,126,396,305.52/108,657.20
  6. Step 6: Final answer
    x = 83,992.56

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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.