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Finding the Fourth Proportional to 133,977.60, 200,966.40 and 55,148.40

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Solution

The fourth proportional to 133,977.60, 200,966.40 and 55,148.40 is: 82,722.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,977.60 : 200,966.40 = 55,148.40 : x
  2. Step 2: Convert to fraction form
    133,977.60/200,966.40 = 55,148.40/x
  3. Step 3: Cross multiply
    133,977.60x = 200,966.40 × 55,148.40
  4. Step 4: Simplify right side
    133,977.60x = 11,082,975,413.76
  5. Step 5: Solve for x
    x = 11,082,975,413.76/133,977.60
  6. Step 6: Final answer
    x = 82,722.60

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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.