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Finding the Fourth Proportional to 162,025.28, 243,063.84 and 68,531.84

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Solution

The fourth proportional to 162,025.28, 243,063.84 and 68,531.84 is: 102,808.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,025.28 : 243,063.84 = 68,531.84 : x
  2. Step 2: Convert to fraction form
    162,025.28/243,063.84 = 68,531.84/x
  3. Step 3: Cross multiply
    162,025.28x = 243,063.84 × 68,531.84
  4. Step 4: Simplify right side
    162,025.28x = 16,657,612,192.67
  5. Step 5: Solve for x
    x = 16,657,612,192.67/162,025.28
  6. Step 6: Final answer
    x = 102,808.72

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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.