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Finding the Fourth Proportional to 111,147.50, 166,721.52 and 28,041.50

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Solution

The fourth proportional to 111,147.50, 166,721.52 and 28,041.50 is: 42,062.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,147.50 : 166,721.52 = 28,041.50 : x
  2. Step 2: Convert to fraction form
    111,147.50/166,721.52 = 28,041.50/x
  3. Step 3: Cross multiply
    111,147.50x = 166,721.52 × 28,041.50
  4. Step 4: Simplify right side
    111,147.50x = 4,675,121,503.08
  5. Step 5: Solve for x
    x = 4,675,121,503.08/111,147.50
  6. Step 6: Final answer
    x = 42,062.32

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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.