Home / 161,720.87-223,168.30-90,099.05

Finding the Fourth Proportional to 161,720.87, 223,168.30 and 90,099.05

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Solution

The fourth proportional to 161,720.87, 223,168.30 and 90,099.05 is: 124,333.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,720.87 : 223,168.30 = 90,099.05 : x
  2. Step 2: Convert to fraction form
    161,720.87/223,168.30 = 90,099.05/x
  3. Step 3: Cross multiply
    161,720.87x = 223,168.30 × 90,099.05
  4. Step 4: Simplify right side
    161,720.87x = 20,107,250,479.03
  5. Step 5: Solve for x
    x = 20,107,250,479.03/161,720.87
  6. Step 6: Final answer
    x = 124,333.06

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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.