Home / 154,766.39-213,562.77-86,786.22

Finding the Fourth Proportional to 154,766.39, 213,562.77 and 86,786.22

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Solution

The fourth proportional to 154,766.39, 213,562.77 and 86,786.22 is: 119,756.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,766.39 : 213,562.77 = 86,786.22 : x
  2. Step 2: Convert to fraction form
    154,766.39/213,562.77 = 86,786.22/x
  3. Step 3: Cross multiply
    154,766.39x = 213,562.77 × 86,786.22
  4. Step 4: Simplify right side
    154,766.39x = 18,534,305,541.03
  5. Step 5: Solve for x
    x = 18,534,305,541.03/154,766.39
  6. Step 6: Final answer
    x = 119,756.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.