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Finding the Fourth Proportional to 136,378.46, 188,189.53 and 79,019.97

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Solution

The fourth proportional to 136,378.46, 188,189.53 and 79,019.97 is: 109,040.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,378.46 : 188,189.53 = 79,019.97 : x
  2. Step 2: Convert to fraction form
    136,378.46/188,189.53 = 79,019.97/x
  3. Step 3: Cross multiply
    136,378.46x = 188,189.53 × 79,019.97
  4. Step 4: Simplify right side
    136,378.46x = 14,870,730,111.65
  5. Step 5: Solve for x
    x = 14,870,730,111.65/136,378.46
  6. Step 6: Final answer
    x = 109,040.17

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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.