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Finding the Fourth Proportional to 109,402.92, 150,976.98 and 61,647.12

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Solution

The fourth proportional to 109,402.92, 150,976.98 and 61,647.12 is: 85,073.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,402.92 : 150,976.98 = 61,647.12 : x
  2. Step 2: Convert to fraction form
    109,402.92/150,976.98 = 61,647.12/x
  3. Step 3: Cross multiply
    109,402.92x = 150,976.98 × 61,647.12
  4. Step 4: Simplify right side
    109,402.92x = 9,307,296,003.30
  5. Step 5: Solve for x
    x = 9,307,296,003.30/109,402.92
  6. Step 6: Final answer
    x = 85,073.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.