Home / 109,723.60-164,585.40-72,325.90

Finding the Fourth Proportional to 109,723.60, 164,585.40 and 72,325.90

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Solution

The fourth proportional to 109,723.60, 164,585.40 and 72,325.90 is: 108,488.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,723.60 : 164,585.40 = 72,325.90 : x
  2. Step 2: Convert to fraction form
    109,723.60/164,585.40 = 72,325.90/x
  3. Step 3: Cross multiply
    109,723.60x = 164,585.40 × 72,325.90
  4. Step 4: Simplify right side
    109,723.60x = 11,903,787,181.86
  5. Step 5: Solve for x
    x = 11,903,787,181.86/109,723.60
  6. Step 6: Final answer
    x = 108,488.85

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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.