Home / 109,809.40-164,722.20-39,679.60

Finding the Fourth Proportional to 109,809.40, 164,722.20 and 39,679.60

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Solution

The fourth proportional to 109,809.40, 164,722.20 and 39,679.60 is: 59,522.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,809.40 : 164,722.20 = 39,679.60 : x
  2. Step 2: Convert to fraction form
    109,809.40/164,722.20 = 39,679.60/x
  3. Step 3: Cross multiply
    109,809.40x = 164,722.20 × 39,679.60
  4. Step 4: Simplify right side
    109,809.40x = 6,536,111,007.12
  5. Step 5: Solve for x
    x = 6,536,111,007.12/109,809.40
  6. Step 6: Final answer
    x = 59,522.33

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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.