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Finding the Fourth Proportional to 162,116.20, 243,087.90 and 68,516.20

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Solution

The fourth proportional to 162,116.20, 243,087.90 and 68,516.20 is: 102,737.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,116.20 : 243,087.90 = 68,516.20 : x
  2. Step 2: Convert to fraction form
    162,116.20/243,087.90 = 68,516.20/x
  3. Step 3: Cross multiply
    162,116.20x = 243,087.90 × 68,516.20
  4. Step 4: Simplify right side
    162,116.20x = 16,655,459,173.98
  5. Step 5: Solve for x
    x = 16,655,459,173.98/162,116.20
  6. Step 6: Final answer
    x = 102,737.78

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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.