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Finding the Fourth Proportional to 133,309.87, 200,038.61 and 79,870.52

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Solution

The fourth proportional to 133,309.87, 200,038.61 and 79,870.52 is: 119,850.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,309.87 : 200,038.61 = 79,870.52 : x
  2. Step 2: Convert to fraction form
    133,309.87/200,038.61 = 79,870.52/x
  3. Step 3: Cross multiply
    133,309.87x = 200,038.61 × 79,870.52
  4. Step 4: Simplify right side
    133,309.87x = 15,977,188,500.55
  5. Step 5: Solve for x
    x = 15,977,188,500.55/133,309.87
  6. Step 6: Final answer
    x = 119,850.01

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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.