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Finding the Fourth Proportional to 92,203.92, 138,218.40 and 45,402.12

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Solution

The fourth proportional to 92,203.92, 138,218.40 and 45,402.12 is: 68,060.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,203.92 : 138,218.40 = 45,402.12 : x
  2. Step 2: Convert to fraction form
    92,203.92/138,218.40 = 45,402.12/x
  3. Step 3: Cross multiply
    92,203.92x = 138,218.40 × 45,402.12
  4. Step 4: Simplify right side
    92,203.92x = 6,275,408,383.01
  5. Step 5: Solve for x
    x = 6,275,408,383.01/92,203.92
  6. Step 6: Final answer
    x = 68,060.10

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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.