Home / 139,971.13-209,913.63-40,104.57

Finding the Fourth Proportional to 139,971.13, 209,913.63 and 40,104.57

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Solution

The fourth proportional to 139,971.13, 209,913.63 and 40,104.57 is: 60,144.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,971.13 : 209,913.63 = 40,104.57 : x
  2. Step 2: Convert to fraction form
    139,971.13/209,913.63 = 40,104.57/x
  3. Step 3: Cross multiply
    139,971.13x = 209,913.63 × 40,104.57
  4. Step 4: Simplify right side
    139,971.13x = 8,418,494,818.72
  5. Step 5: Solve for x
    x = 8,418,494,818.72/139,971.13
  6. Step 6: Final answer
    x = 60,144.51

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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.