Home / 136,916.64-188,942.88-76,488.15

Finding the Fourth Proportional to 136,916.64, 188,942.88 and 76,488.15

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Solution

The fourth proportional to 136,916.64, 188,942.88 and 76,488.15 is: 105,552.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,916.64 : 188,942.88 = 76,488.15 : x
  2. Step 2: Convert to fraction form
    136,916.64/188,942.88 = 76,488.15/x
  3. Step 3: Cross multiply
    136,916.64x = 188,942.88 × 76,488.15
  4. Step 4: Simplify right side
    136,916.64x = 14,451,891,346.87
  5. Step 5: Solve for x
    x = 14,451,891,346.87/136,916.64
  6. Step 6: Final answer
    x = 105,552.48

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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.