Home / 75,149.09-112,723.62-18,989.36

Finding the Fourth Proportional to 75,149.09, 112,723.62 and 18,989.36

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Solution

The fourth proportional to 75,149.09, 112,723.62 and 18,989.36 is: 28,484.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,149.09 : 112,723.62 = 18,989.36 : x
  2. Step 2: Convert to fraction form
    75,149.09/112,723.62 = 18,989.36/x
  3. Step 3: Cross multiply
    75,149.09x = 112,723.62 × 18,989.36
  4. Step 4: Simplify right side
    75,149.09x = 2,140,549,400.68
  5. Step 5: Solve for x
    x = 2,140,549,400.68/75,149.09
  6. Step 6: Final answer
    x = 28,484.04

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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.