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Finding the Fourth Proportional to 133,089.70, 199,634.55 and 69,885.40

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Solution

The fourth proportional to 133,089.70, 199,634.55 and 69,885.40 is: 104,828.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,089.70 : 199,634.55 = 69,885.40 : x
  2. Step 2: Convert to fraction form
    133,089.70/199,634.55 = 69,885.40/x
  3. Step 3: Cross multiply
    133,089.70x = 199,634.55 × 69,885.40
  4. Step 4: Simplify right side
    133,089.70x = 13,951,540,380.57
  5. Step 5: Solve for x
    x = 13,951,540,380.57/133,089.70
  6. Step 6: Final answer
    x = 104,828.10

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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.