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Finding the Fourth Proportional to 111,712.50, 154,163.52 and 61,414.74

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Solution

The fourth proportional to 111,712.50, 154,163.52 and 61,414.74 is: 84,752.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,712.50 : 154,163.52 = 61,414.74 : x
  2. Step 2: Convert to fraction form
    111,712.50/154,163.52 = 61,414.74/x
  3. Step 3: Cross multiply
    111,712.50x = 154,163.52 × 61,414.74
  4. Step 4: Simplify right side
    111,712.50x = 9,467,912,498.28
  5. Step 5: Solve for x
    x = 9,467,912,498.28/111,712.50
  6. Step 6: Final answer
    x = 84,752.49

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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.