Home / 139,968.09-209,988.33-40,135.59

Finding the Fourth Proportional to 139,968.09, 209,988.33 and 40,135.59

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Solution

The fourth proportional to 139,968.09, 209,988.33 and 40,135.59 is: 60,213.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,968.09 : 209,988.33 = 40,135.59 : x
  2. Step 2: Convert to fraction form
    139,968.09/209,988.33 = 40,135.59/x
  3. Step 3: Cross multiply
    139,968.09x = 209,988.33 × 40,135.59
  4. Step 4: Simplify right side
    139,968.09x = 8,428,005,930.66
  5. Step 5: Solve for x
    x = 8,428,005,930.66/139,968.09
  6. Step 6: Final answer
    x = 60,213.77

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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.