Home / 261,187.83-391,782.36-71,650.95

Finding the Fourth Proportional to 261,187.83, 391,782.36 and 71,650.95

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Solution

The fourth proportional to 261,187.83, 391,782.36 and 71,650.95 is: 107,476.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,187.83 : 391,782.36 = 71,650.95 : x
  2. Step 2: Convert to fraction form
    261,187.83/391,782.36 = 71,650.95/x
  3. Step 3: Cross multiply
    261,187.83x = 391,782.36 × 71,650.95
  4. Step 4: Simplify right side
    261,187.83x = 28,071,578,287.24
  5. Step 5: Solve for x
    x = 28,071,578,287.24/261,187.83
  6. Step 6: Final answer
    x = 107,476.59

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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.