Home / 140,636.52-211,039.74-74,125.80

Finding the Fourth Proportional to 140,636.52, 211,039.74 and 74,125.80

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Solution

The fourth proportional to 140,636.52, 211,039.74 and 74,125.80 is: 111,233.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,636.52 : 211,039.74 = 74,125.80 : x
  2. Step 2: Convert to fraction form
    140,636.52/211,039.74 = 74,125.80/x
  3. Step 3: Cross multiply
    140,636.52x = 211,039.74 × 74,125.80
  4. Step 4: Simplify right side
    140,636.52x = 15,643,489,559.29
  5. Step 5: Solve for x
    x = 15,643,489,559.29/140,636.52
  6. Step 6: Final answer
    x = 111,233.48

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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.