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Finding the Fourth Proportional to 112,993.45, 169,491.12 and 28,753.72

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Solution

The fourth proportional to 112,993.45, 169,491.12 and 28,753.72 is: 43,130.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,993.45 : 169,491.12 = 28,753.72 : x
  2. Step 2: Convert to fraction form
    112,993.45/169,491.12 = 28,753.72/x
  3. Step 3: Cross multiply
    112,993.45x = 169,491.12 × 28,753.72
  4. Step 4: Simplify right side
    112,993.45x = 4,873,500,206.97
  5. Step 5: Solve for x
    x = 4,873,500,206.97/112,993.45
  6. Step 6: Final answer
    x = 43,130.82

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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.