Home / 126,979.49-190,706.29-111,787.46

Finding the Fourth Proportional to 126,979.49, 190,706.29 and 111,787.46

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Solution

The fourth proportional to 126,979.49, 190,706.29 and 111,787.46 is: 167,889.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,979.49 : 190,706.29 = 111,787.46 : x
  2. Step 2: Convert to fraction form
    126,979.49/190,706.29 = 111,787.46/x
  3. Step 3: Cross multiply
    126,979.49x = 190,706.29 × 111,787.46
  4. Step 4: Simplify right side
    126,979.49x = 21,318,571,962.42
  5. Step 5: Solve for x
    x = 21,318,571,962.42/126,979.49
  6. Step 6: Final answer
    x = 167,889.89

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.