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Finding the Fourth Proportional to 108,615.40, 162,923.10 and 92,212.90

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Solution

The fourth proportional to 108,615.40, 162,923.10 and 92,212.90 is: 138,319.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,615.40 : 162,923.10 = 92,212.90 : x
  2. Step 2: Convert to fraction form
    108,615.40/162,923.10 = 92,212.90/x
  3. Step 3: Cross multiply
    108,615.40x = 162,923.10 × 92,212.90
  4. Step 4: Simplify right side
    108,615.40x = 15,023,611,527.99
  5. Step 5: Solve for x
    x = 15,023,611,527.99/108,615.40
  6. Step 6: Final answer
    x = 138,319.35

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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.