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Finding the Fourth Proportional to 133,999.20, 201,152.40 and 78,626.40

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Solution

The fourth proportional to 133,999.20, 201,152.40 and 78,626.40 is: 118,029.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,999.20 : 201,152.40 = 78,626.40 : x
  2. Step 2: Convert to fraction form
    133,999.20/201,152.40 = 78,626.40/x
  3. Step 3: Cross multiply
    133,999.20x = 201,152.40 × 78,626.40
  4. Step 4: Simplify right side
    133,999.20x = 15,815,889,063.36
  5. Step 5: Solve for x
    x = 15,815,889,063.36/133,999.20
  6. Step 6: Final answer
    x = 118,029.73

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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.