Home / 136,895.78-188,910.51-76,466.14

Finding the Fourth Proportional to 136,895.78, 188,910.51 and 76,466.14

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Solution

The fourth proportional to 136,895.78, 188,910.51 and 76,466.14 is: 105,520.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,895.78 : 188,910.51 = 76,466.14 : x
  2. Step 2: Convert to fraction form
    136,895.78/188,910.51 = 76,466.14/x
  3. Step 3: Cross multiply
    136,895.78x = 188,910.51 × 76,466.14
  4. Step 4: Simplify right side
    136,895.78x = 14,445,257,505.13
  5. Step 5: Solve for x
    x = 14,445,257,505.13/136,895.78
  6. Step 6: Final answer
    x = 105,520.11

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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.