Home / 137,834.28-190,161.54-78,183.72

Finding the Fourth Proportional to 137,834.28, 190,161.54 and 78,183.72

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Solution

The fourth proportional to 137,834.28, 190,161.54 and 78,183.72 is: 107,865.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,834.28 : 190,161.54 = 78,183.72 : x
  2. Step 2: Convert to fraction form
    137,834.28/190,161.54 = 78,183.72/x
  3. Step 3: Cross multiply
    137,834.28x = 190,161.54 × 78,183.72
  4. Step 4: Simplify right side
    137,834.28x = 14,867,536,598.13
  5. Step 5: Solve for x
    x = 14,867,536,598.13/137,834.28
  6. Step 6: Final answer
    x = 107,865.30

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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.