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Finding the Fourth Proportional to 112,993.80, 169,485.30 and 38,106.60

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Solution

The fourth proportional to 112,993.80, 169,485.30 and 38,106.60 is: 57,158.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,993.80 : 169,485.30 = 38,106.60 : x
  2. Step 2: Convert to fraction form
    112,993.80/169,485.30 = 38,106.60/x
  3. Step 3: Cross multiply
    112,993.80x = 169,485.30 × 38,106.60
  4. Step 4: Simplify right side
    112,993.80x = 6,458,508,532.98
  5. Step 5: Solve for x
    x = 6,458,508,532.98/112,993.80
  6. Step 6: Final answer
    x = 57,158.08

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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.