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Finding the Fourth Proportional to 108,213.84, 162,378.90 and 52,809.84

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Solution

The fourth proportional to 108,213.84, 162,378.90 and 52,809.84 is: 79,243.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,213.84 : 162,378.90 = 52,809.84 : x
  2. Step 2: Convert to fraction form
    108,213.84/162,378.90 = 52,809.84/x
  3. Step 3: Cross multiply
    108,213.84x = 162,378.90 × 52,809.84
  4. Step 4: Simplify right side
    108,213.84x = 8,575,203,728.38
  5. Step 5: Solve for x
    x = 8,575,203,728.38/108,213.84
  6. Step 6: Final answer
    x = 79,243.13

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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.