Home / 161,811-223,306.84-90,191.52

Finding the Fourth Proportional to 161,811, 223,306.84 and 90,191.52

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Solution

The fourth proportional to 161,811, 223,306.84 and 90,191.52 is: 124,468.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,811 : 223,306.84 = 90,191.52 : x
  2. Step 2: Convert to fraction form
    161,811/223,306.84 = 90,191.52/x
  3. Step 3: Cross multiply
    161,811x = 223,306.84 × 90,191.52
  4. Step 4: Simplify right side
    161,811x = 20,140,383,326.00
  5. Step 5: Solve for x
    x = 20,140,383,326.00/161,811
  6. Step 6: Final answer
    x = 124,468.57

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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.