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Finding the Fourth Proportional to 162,426.70, 243,640.05 and 68,920.30

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Solution

The fourth proportional to 162,426.70, 243,640.05 and 68,920.30 is: 103,380.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,426.70 : 243,640.05 = 68,920.30 : x
  2. Step 2: Convert to fraction form
    162,426.70/243,640.05 = 68,920.30/x
  3. Step 3: Cross multiply
    162,426.70x = 243,640.05 × 68,920.30
  4. Step 4: Simplify right side
    162,426.70x = 16,791,745,338.02
  5. Step 5: Solve for x
    x = 16,791,745,338.02/162,426.70
  6. Step 6: Final answer
    x = 103,380.45

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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.