Home / 109,965.40-164,948.10-71,911.60

Finding the Fourth Proportional to 109,965.40, 164,948.10 and 71,911.60

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Solution

The fourth proportional to 109,965.40, 164,948.10 and 71,911.60 is: 107,867.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,965.40 : 164,948.10 = 71,911.60 : x
  2. Step 2: Convert to fraction form
    109,965.40/164,948.10 = 71,911.60/x
  3. Step 3: Cross multiply
    109,965.40x = 164,948.10 × 71,911.60
  4. Step 4: Simplify right side
    109,965.40x = 11,861,681,787.96
  5. Step 5: Solve for x
    x = 11,861,681,787.96/109,965.40
  6. Step 6: Final answer
    x = 107,867.40

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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.