Home / 126,871.78-190,248.07-73,578.90

Finding the Fourth Proportional to 126,871.78, 190,248.07 and 73,578.90

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Solution

The fourth proportional to 126,871.78, 190,248.07 and 73,578.90 is: 110,333.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,871.78 : 190,248.07 = 73,578.90 : x
  2. Step 2: Convert to fraction form
    126,871.78/190,248.07 = 73,578.90/x
  3. Step 3: Cross multiply
    126,871.78x = 190,248.07 × 73,578.90
  4. Step 4: Simplify right side
    126,871.78x = 13,998,243,533.78
  5. Step 5: Solve for x
    x = 13,998,243,533.78/126,871.78
  6. Step 6: Final answer
    x = 110,333.79

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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.