Home / 220,915.50-331,170.77-86,070.55

Finding the Fourth Proportional to 220,915.50, 331,170.77 and 86,070.55

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Solution

The fourth proportional to 220,915.50, 331,170.77 and 86,070.55 is: 129,026.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,915.50 : 331,170.77 = 86,070.55 : x
  2. Step 2: Convert to fraction form
    220,915.50/331,170.77 = 86,070.55/x
  3. Step 3: Cross multiply
    220,915.50x = 331,170.77 × 86,070.55
  4. Step 4: Simplify right side
    220,915.50x = 28,504,050,317.82
  5. Step 5: Solve for x
    x = 28,504,050,317.82/220,915.50
  6. Step 6: Final answer
    x = 129,026.94

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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.