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Finding the Fourth Proportional to 139,511.80, 209,267.70 and 133,606.90

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Solution

The fourth proportional to 139,511.80, 209,267.70 and 133,606.90 is: 200,410.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,511.80 : 209,267.70 = 133,606.90 : x
  2. Step 2: Convert to fraction form
    139,511.80/209,267.70 = 133,606.90/x
  3. Step 3: Cross multiply
    139,511.80x = 209,267.70 × 133,606.90
  4. Step 4: Simplify right side
    139,511.80x = 27,959,608,667.13
  5. Step 5: Solve for x
    x = 27,959,608,667.13/139,511.80
  6. Step 6: Final answer
    x = 200,410.35

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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.