Home / 128,734.20-193,101.30-65,748.60

Finding the Fourth Proportional to 128,734.20, 193,101.30 and 65,748.60

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Solution

The fourth proportional to 128,734.20, 193,101.30 and 65,748.60 is: 98,622.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,734.20 : 193,101.30 = 65,748.60 : x
  2. Step 2: Convert to fraction form
    128,734.20/193,101.30 = 65,748.60/x
  3. Step 3: Cross multiply
    128,734.20x = 193,101.30 × 65,748.60
  4. Step 4: Simplify right side
    128,734.20x = 12,696,140,133.18
  5. Step 5: Solve for x
    x = 12,696,140,133.18/128,734.20
  6. Step 6: Final answer
    x = 98,622.90

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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.