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Finding the Fourth Proportional to 108,528.60, 162,792.90 and 71,203.80

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Solution

The fourth proportional to 108,528.60, 162,792.90 and 71,203.80 is: 106,805.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,528.60 : 162,792.90 = 71,203.80 : x
  2. Step 2: Convert to fraction form
    108,528.60/162,792.90 = 71,203.80/x
  3. Step 3: Cross multiply
    108,528.60x = 162,792.90 × 71,203.80
  4. Step 4: Simplify right side
    108,528.60x = 11,591,473,093.02
  5. Step 5: Solve for x
    x = 11,591,473,093.02/108,528.60
  6. Step 6: Final answer
    x = 106,805.70

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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.