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Finding the Fourth Proportional to 108,193.80, 162,290.70 and 106,638.60

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Solution

The fourth proportional to 108,193.80, 162,290.70 and 106,638.60 is: 159,957.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,193.80 : 162,290.70 = 106,638.60 : x
  2. Step 2: Convert to fraction form
    108,193.80/162,290.70 = 106,638.60/x
  3. Step 3: Cross multiply
    108,193.80x = 162,290.70 × 106,638.60
  4. Step 4: Simplify right side
    108,193.80x = 17,306,453,041.02
  5. Step 5: Solve for x
    x = 17,306,453,041.02/108,193.80
  6. Step 6: Final answer
    x = 159,957.90

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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.