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Finding the Fourth Proportional to 111,808.80, 167,583.60 and 45,205.20

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Solution

The fourth proportional to 111,808.80, 167,583.60 and 45,205.20 is: 67,755.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,808.80 : 167,583.60 = 45,205.20 : x
  2. Step 2: Convert to fraction form
    111,808.80/167,583.60 = 45,205.20/x
  3. Step 3: Cross multiply
    111,808.80x = 167,583.60 × 45,205.20
  4. Step 4: Simplify right side
    111,808.80x = 7,575,650,154.72
  5. Step 5: Solve for x
    x = 7,575,650,154.72/111,808.80
  6. Step 6: Final answer
    x = 67,755.40

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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.