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Finding the Fourth Proportional to 130,361.70, 179,806.20 and 119,641.14

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Solution

The fourth proportional to 130,361.70, 179,806.20 and 119,641.14 is: 165,019.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,361.70 : 179,806.20 = 119,641.14 : x
  2. Step 2: Convert to fraction form
    130,361.70/179,806.20 = 119,641.14/x
  3. Step 3: Cross multiply
    130,361.70x = 179,806.20 × 119,641.14
  4. Step 4: Simplify right side
    130,361.70x = 21,512,218,747.07
  5. Step 5: Solve for x
    x = 21,512,218,747.07/130,361.70
  6. Step 6: Final answer
    x = 165,019.47

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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.