Home / 180,723.17-270,716.61-85,665.23

Finding the Fourth Proportional to 180,723.17, 270,716.61 and 85,665.23

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Solution

The fourth proportional to 180,723.17, 270,716.61 and 85,665.23 is: 128,323.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,723.17 : 270,716.61 = 85,665.23 : x
  2. Step 2: Convert to fraction form
    180,723.17/270,716.61 = 85,665.23/x
  3. Step 3: Cross multiply
    180,723.17x = 270,716.61 × 85,665.23
  4. Step 4: Simplify right side
    180,723.17x = 23,191,000,660.47
  5. Step 5: Solve for x
    x = 23,191,000,660.47/180,723.17
  6. Step 6: Final answer
    x = 128,323.34

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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.