Home / 136,616.84-188,530.87-76,187.55

Finding the Fourth Proportional to 136,616.84, 188,530.87 and 76,187.55

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Solution

The fourth proportional to 136,616.84, 188,530.87 and 76,187.55 is: 105,138.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,616.84 : 188,530.87 = 76,187.55 : x
  2. Step 2: Convert to fraction form
    136,616.84/188,530.87 = 76,187.55/x
  3. Step 3: Cross multiply
    136,616.84x = 188,530.87 × 76,187.55
  4. Step 4: Simplify right side
    136,616.84x = 14,363,703,761.08
  5. Step 5: Solve for x
    x = 14,363,703,761.08/136,616.84
  6. Step 6: Final answer
    x = 105,138.61

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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.