Home / 139,564.22-192,594.48-79,140.38

Finding the Fourth Proportional to 139,564.22, 192,594.48 and 79,140.38

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Solution

The fourth proportional to 139,564.22, 192,594.48 and 79,140.38 is: 109,211.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,564.22 : 192,594.48 = 79,140.38 : x
  2. Step 2: Convert to fraction form
    139,564.22/192,594.48 = 79,140.38/x
  3. Step 3: Cross multiply
    139,564.22x = 192,594.48 × 79,140.38
  4. Step 4: Simplify right side
    139,564.22x = 15,242,000,333.10
  5. Step 5: Solve for x
    x = 15,242,000,333.10/139,564.22
  6. Step 6: Final answer
    x = 109,211.37

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.