Home / 125,776.06-188,664.09-86,213.23

Finding the Fourth Proportional to 125,776.06, 188,664.09 and 86,213.23

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Solution

The fourth proportional to 125,776.06, 188,664.09 and 86,213.23 is: 129,319.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,776.06 : 188,664.09 = 86,213.23 : x
  2. Step 2: Convert to fraction form
    125,776.06/188,664.09 = 86,213.23/x
  3. Step 3: Cross multiply
    125,776.06x = 188,664.09 × 86,213.23
  4. Step 4: Simplify right side
    125,776.06x = 16,265,339,788.95
  5. Step 5: Solve for x
    x = 16,265,339,788.95/125,776.06
  6. Step 6: Final answer
    x = 129,319.84

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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.