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Finding the Fourth Proportional to 112,040.40, 167,866.20 and 72,577.20

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Solution

The fourth proportional to 112,040.40, 167,866.20 and 72,577.20 is: 108,739.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,040.40 : 167,866.20 = 72,577.20 : x
  2. Step 2: Convert to fraction form
    112,040.40/167,866.20 = 72,577.20/x
  3. Step 3: Cross multiply
    112,040.40x = 167,866.20 × 72,577.20
  4. Step 4: Simplify right side
    112,040.40x = 12,183,258,770.64
  5. Step 5: Solve for x
    x = 12,183,258,770.64/112,040.40
  6. Step 6: Final answer
    x = 108,739.87

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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.