Home / 126,111.40-174,033.74-72,399.90

Finding the Fourth Proportional to 126,111.40, 174,033.74 and 72,399.90

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Solution

The fourth proportional to 126,111.40, 174,033.74 and 72,399.90 is: 99,911.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,111.40 : 174,033.74 = 72,399.90 : x
  2. Step 2: Convert to fraction form
    126,111.40/174,033.74 = 72,399.90/x
  3. Step 3: Cross multiply
    126,111.40x = 174,033.74 × 72,399.90
  4. Step 4: Simplify right side
    126,111.40x = 12,600,025,372.63
  5. Step 5: Solve for x
    x = 12,600,025,372.63/126,111.40
  6. Step 6: Final answer
    x = 99,911.87

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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.