Home / 261,200.12-391,669.62-120,838.52

Finding the Fourth Proportional to 261,200.12, 391,669.62 and 120,838.52

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Solution

The fourth proportional to 261,200.12, 391,669.62 and 120,838.52 is: 181,197.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,200.12 : 391,669.62 = 120,838.52 : x
  2. Step 2: Convert to fraction form
    261,200.12/391,669.62 = 120,838.52/x
  3. Step 3: Cross multiply
    261,200.12x = 391,669.62 × 120,838.52
  4. Step 4: Simplify right side
    261,200.12x = 47,328,777,209.76
  5. Step 5: Solve for x
    x = 47,328,777,209.76/261,200.12
  6. Step 6: Final answer
    x = 181,197.38

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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.