Home / 161,818.21-223,316.69-90,198.75

Finding the Fourth Proportional to 161,818.21, 223,316.69 and 90,198.75

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Solution

The fourth proportional to 161,818.21, 223,316.69 and 90,198.75 is: 124,478.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,818.21 : 223,316.69 = 90,198.75 : x
  2. Step 2: Convert to fraction form
    161,818.21/223,316.69 = 90,198.75/x
  3. Step 3: Cross multiply
    161,818.21x = 223,316.69 × 90,198.75
  4. Step 4: Simplify right side
    161,818.21x = 20,142,886,292.14
  5. Step 5: Solve for x
    x = 20,142,886,292.14/161,818.21
  6. Step 6: Final answer
    x = 124,478.49

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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.