Home / 75,150.69-112,725.27-18,989.66

Finding the Fourth Proportional to 75,150.69, 112,725.27 and 18,989.66

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Solution

The fourth proportional to 75,150.69, 112,725.27 and 18,989.66 is: 28,484.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,150.69 : 112,725.27 = 18,989.66 : x
  2. Step 2: Convert to fraction form
    75,150.69/112,725.27 = 18,989.66/x
  3. Step 3: Cross multiply
    75,150.69x = 112,725.27 × 18,989.66
  4. Step 4: Simplify right side
    75,150.69x = 2,140,613,987.08
  5. Step 5: Solve for x
    x = 2,140,613,987.08/75,150.69
  6. Step 6: Final answer
    x = 28,484.29

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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.