Home / 139,934.74-193,115.16-79,515.64

Finding the Fourth Proportional to 139,934.74, 193,115.16 and 79,515.64

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Solution

The fourth proportional to 139,934.74, 193,115.16 and 79,515.64 is: 109,734.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,934.74 : 193,115.16 = 79,515.64 : x
  2. Step 2: Convert to fraction form
    139,934.74/193,115.16 = 79,515.64/x
  3. Step 3: Cross multiply
    139,934.74x = 193,115.16 × 79,515.64
  4. Step 4: Simplify right side
    139,934.74x = 15,355,675,541.10
  5. Step 5: Solve for x
    x = 15,355,675,541.10/139,934.74
  6. Step 6: Final answer
    x = 109,734.55

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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.