Home / 126,512.53-174,518.20-81,140.03

Finding the Fourth Proportional to 126,512.53, 174,518.20 and 81,140.03

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Solution

The fourth proportional to 126,512.53, 174,518.20 and 81,140.03 is: 111,928.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,512.53 : 174,518.20 = 81,140.03 : x
  2. Step 2: Convert to fraction form
    126,512.53/174,518.20 = 81,140.03/x
  3. Step 3: Cross multiply
    126,512.53x = 174,518.20 × 81,140.03
  4. Step 4: Simplify right side
    126,512.53x = 14,160,411,410.41
  5. Step 5: Solve for x
    x = 14,160,411,410.41/126,512.53
  6. Step 6: Final answer
    x = 111,928.92

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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.