Home / 78,171.30-117,257.04-54,901.62

Finding the Fourth Proportional to 78,171.30, 117,257.04 and 54,901.62

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Solution

The fourth proportional to 78,171.30, 117,257.04 and 54,901.62 is: 82,352.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,171.30 : 117,257.04 = 54,901.62 : x
  2. Step 2: Convert to fraction form
    78,171.30/117,257.04 = 54,901.62/x
  3. Step 3: Cross multiply
    78,171.30x = 117,257.04 × 54,901.62
  4. Step 4: Simplify right side
    78,171.30x = 6,437,601,452.40
  5. Step 5: Solve for x
    x = 6,437,601,452.40/78,171.30
  6. Step 6: Final answer
    x = 82,352.49

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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.