Home / 220,985.60-331,526.40-80,744

Finding the Fourth Proportional to 220,985.60, 331,526.40 and 80,744

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Solution

The fourth proportional to 220,985.60, 331,526.40 and 80,744 is: 121,133.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,985.60 : 331,526.40 = 80,744 : x
  2. Step 2: Convert to fraction form
    220,985.60/331,526.40 = 80,744/x
  3. Step 3: Cross multiply
    220,985.60x = 331,526.40 × 80,744
  4. Step 4: Simplify right side
    220,985.60x = 26,768,767,641.60
  5. Step 5: Solve for x
    x = 26,768,767,641.60/220,985.60
  6. Step 6: Final answer
    x = 121,133.54

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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.