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Finding the Fourth Proportional to 111,306.30, 166,959.45 and 28,200.30

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Solution

The fourth proportional to 111,306.30, 166,959.45 and 28,200.30 is: 42,300.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,306.30 : 166,959.45 = 28,200.30 : x
  2. Step 2: Convert to fraction form
    111,306.30/166,959.45 = 28,200.30/x
  3. Step 3: Cross multiply
    111,306.30x = 166,959.45 × 28,200.30
  4. Step 4: Simplify right side
    111,306.30x = 4,708,306,577.84
  5. Step 5: Solve for x
    x = 4,708,306,577.84/111,306.30
  6. Step 6: Final answer
    x = 42,300.45

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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.