Home / 126,811.20-174,840.64-81,409.12

Finding the Fourth Proportional to 126,811.20, 174,840.64 and 81,409.12

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Solution

The fourth proportional to 126,811.20, 174,840.64 and 81,409.12 is: 112,242.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,811.20 : 174,840.64 = 81,409.12 : x
  2. Step 2: Convert to fraction form
    126,811.20/174,840.64 = 81,409.12/x
  3. Step 3: Cross multiply
    126,811.20x = 174,840.64 × 81,409.12
  4. Step 4: Simplify right side
    126,811.20x = 14,233,622,642.64
  5. Step 5: Solve for x
    x = 14,233,622,642.64/126,811.20
  6. Step 6: Final answer
    x = 112,242.63

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1.5x scale

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.