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Finding the Fourth Proportional to 133,087.20, 199,630.80 and 69,882.90

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Solution

The fourth proportional to 133,087.20, 199,630.80 and 69,882.90 is: 104,824.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,087.20 : 199,630.80 = 69,882.90 : x
  2. Step 2: Convert to fraction form
    133,087.20/199,630.80 = 69,882.90/x
  3. Step 3: Cross multiply
    133,087.20x = 199,630.80 × 69,882.90
  4. Step 4: Simplify right side
    133,087.20x = 13,950,779,233.32
  5. Step 5: Solve for x
    x = 13,950,779,233.32/133,087.20
  6. Step 6: Final answer
    x = 104,824.35

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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.