Home / 139,922.24-193,097.19-79,491.78

Finding the Fourth Proportional to 139,922.24, 193,097.19 and 79,491.78

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Solution

The fourth proportional to 139,922.24, 193,097.19 and 79,491.78 is: 109,701.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,922.24 : 193,097.19 = 79,491.78 : x
  2. Step 2: Convert to fraction form
    139,922.24/193,097.19 = 79,491.78/x
  3. Step 3: Cross multiply
    139,922.24x = 193,097.19 × 79,491.78
  4. Step 4: Simplify right side
    139,922.24x = 15,349,639,346.10
  5. Step 5: Solve for x
    x = 15,349,639,346.10/139,922.24
  6. Step 6: Final answer
    x = 109,701.22

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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.