Home / 109,385.60-164,078.40-82,813.55

Finding the Fourth Proportional to 109,385.60, 164,078.40 and 82,813.55

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Solution

The fourth proportional to 109,385.60, 164,078.40 and 82,813.55 is: 124,220.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,385.60 : 164,078.40 = 82,813.55 : x
  2. Step 2: Convert to fraction form
    109,385.60/164,078.40 = 82,813.55/x
  3. Step 3: Cross multiply
    109,385.60x = 164,078.40 × 82,813.55
  4. Step 4: Simplify right side
    109,385.60x = 13,587,914,782.32
  5. Step 5: Solve for x
    x = 13,587,914,782.32/109,385.60
  6. Step 6: Final answer
    x = 124,220.33

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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.