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Finding the Fourth Proportional to 133,068.80, 199,603.20 and 54,239.60

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Solution

The fourth proportional to 133,068.80, 199,603.20 and 54,239.60 is: 81,359.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,068.80 : 199,603.20 = 54,239.60 : x
  2. Step 2: Convert to fraction form
    133,068.80/199,603.20 = 54,239.60/x
  3. Step 3: Cross multiply
    133,068.80x = 199,603.20 × 54,239.60
  4. Step 4: Simplify right side
    133,068.80x = 10,826,397,726.72
  5. Step 5: Solve for x
    x = 10,826,397,726.72/133,068.80
  6. Step 6: Final answer
    x = 81,359.40

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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.