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Finding the Fourth Proportional to 111,309.50, 166,973.97 and 28,203.50

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Solution

The fourth proportional to 111,309.50, 166,973.97 and 28,203.50 is: 42,307.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,309.50 : 166,973.97 = 28,203.50 : x
  2. Step 2: Convert to fraction form
    111,309.50/166,973.97 = 28,203.50/x
  3. Step 3: Cross multiply
    111,309.50x = 166,973.97 × 28,203.50
  4. Step 4: Simplify right side
    111,309.50x = 4,709,250,362.90
  5. Step 5: Solve for x
    x = 4,709,250,362.90/111,309.50
  6. Step 6: Final answer
    x = 42,307.71

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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.