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Finding the Fourth Proportional to 162,938.70, 244,408.05 and 69,432.30

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Solution

The fourth proportional to 162,938.70, 244,408.05 and 69,432.30 is: 104,148.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,938.70 : 244,408.05 = 69,432.30 : x
  2. Step 2: Convert to fraction form
    162,938.70/244,408.05 = 69,432.30/x
  3. Step 3: Cross multiply
    162,938.70x = 244,408.05 × 69,432.30
  4. Step 4: Simplify right side
    162,938.70x = 16,969,813,050.02
  5. Step 5: Solve for x
    x = 16,969,813,050.02/162,938.70
  6. Step 6: Final answer
    x = 104,148.45

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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.