Home / 126,905.70-190,358.55-112,143.45

Finding the Fourth Proportional to 126,905.70, 190,358.55 and 112,143.45

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Solution

The fourth proportional to 126,905.70, 190,358.55 and 112,143.45 is: 168,215.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,905.70 : 190,358.55 = 112,143.45 : x
  2. Step 2: Convert to fraction form
    126,905.70/190,358.55 = 112,143.45/x
  3. Step 3: Cross multiply
    126,905.70x = 190,358.55 × 112,143.45
  4. Step 4: Simplify right side
    126,905.70x = 21,347,464,534.00
  5. Step 5: Solve for x
    x = 21,347,464,534.00/126,905.70
  6. Step 6: Final answer
    x = 168,215.18

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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.