Home / 136,947.78-188,977.23-76,515.30

Finding the Fourth Proportional to 136,947.78, 188,977.23 and 76,515.30

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Solution

The fourth proportional to 136,947.78, 188,977.23 and 76,515.30 is: 105,585.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,947.78 : 188,977.23 = 76,515.30 : x
  2. Step 2: Convert to fraction form
    136,947.78/188,977.23 = 76,515.30/x
  3. Step 3: Cross multiply
    136,947.78x = 188,977.23 × 76,515.30
  4. Step 4: Simplify right side
    136,947.78x = 14,459,649,446.62
  5. Step 5: Solve for x
    x = 14,459,649,446.62/136,947.78
  6. Step 6: Final answer
    x = 105,585.13

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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.