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Finding the Fourth Proportional to 136,378.38, 188,188.70 and 75,954.65

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Solution

The fourth proportional to 136,378.38, 188,188.70 and 75,954.65 is: 104,809.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,378.38 : 188,188.70 = 75,954.65 : x
  2. Step 2: Convert to fraction form
    136,378.38/188,188.70 = 75,954.65/x
  3. Step 3: Cross multiply
    136,378.38x = 188,188.70 × 75,954.65
  4. Step 4: Simplify right side
    136,378.38x = 14,293,806,044.64
  5. Step 5: Solve for x
    x = 14,293,806,044.64/136,378.38
  6. Step 6: Final answer
    x = 104,809.91

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1.5x scale

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.