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Finding the Fourth Proportional to 179,657.60, 269,705.10 and 90,865.40

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Solution

The fourth proportional to 179,657.60, 269,705.10 and 90,865.40 is: 136,408.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    179,657.60 : 269,705.10 = 90,865.40 : x
  2. Step 2: Convert to fraction form
    179,657.60/269,705.10 = 90,865.40/x
  3. Step 3: Cross multiply
    179,657.60x = 269,705.10 × 90,865.40
  4. Step 4: Simplify right side
    179,657.60x = 24,506,861,793.54
  5. Step 5: Solve for x
    x = 24,506,861,793.54/179,657.60
  6. Step 6: Final answer
    x = 136,408.71

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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.