Home / 205,239.11-307,875.02-72,149.22

Finding the Fourth Proportional to 205,239.11, 307,875.02 and 72,149.22

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Solution

The fourth proportional to 205,239.11, 307,875.02 and 72,149.22 is: 108,229.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,239.11 : 307,875.02 = 72,149.22 : x
  2. Step 2: Convert to fraction form
    205,239.11/307,875.02 = 72,149.22/x
  3. Step 3: Cross multiply
    205,239.11x = 307,875.02 × 72,149.22
  4. Step 4: Simplify right side
    205,239.11x = 22,212,942,189.74
  5. Step 5: Solve for x
    x = 22,212,942,189.74/205,239.11
  6. Step 6: Final answer
    x = 108,229.58

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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.