Home / 136,818.14-188,801.10-76,392.61

Finding the Fourth Proportional to 136,818.14, 188,801.10 and 76,392.61

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Solution

The fourth proportional to 136,818.14, 188,801.10 and 76,392.61 is: 105,417.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,818.14 : 188,801.10 = 76,392.61 : x
  2. Step 2: Convert to fraction form
    136,818.14/188,801.10 = 76,392.61/x
  3. Step 3: Cross multiply
    136,818.14x = 188,801.10 × 76,392.61
  4. Step 4: Simplify right side
    136,818.14x = 14,423,008,990.85
  5. Step 5: Solve for x
    x = 14,423,008,990.85/136,818.14
  6. Step 6: Final answer
    x = 105,417.37

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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.