Home / 136,601.76-188,503.20-76,178.64

Finding the Fourth Proportional to 136,601.76, 188,503.20 and 76,178.64

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Solution

The fourth proportional to 136,601.76, 188,503.20 and 76,178.64 is: 105,122.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,601.76 : 188,503.20 = 76,178.64 : x
  2. Step 2: Convert to fraction form
    136,601.76/188,503.20 = 76,178.64/x
  3. Step 3: Cross multiply
    136,601.76x = 188,503.20 × 76,178.64
  4. Step 4: Simplify right side
    136,601.76x = 14,359,917,411.65
  5. Step 5: Solve for x
    x = 14,359,917,411.65/136,601.76
  6. Step 6: Final answer
    x = 105,122.49

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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.