Home / 126,399.49-174,438.77-72,690.41

Finding the Fourth Proportional to 126,399.49, 174,438.77 and 72,690.41

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Solution

The fourth proportional to 126,399.49, 174,438.77 and 72,690.41 is: 100,317.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,399.49 : 174,438.77 = 72,690.41 : x
  2. Step 2: Convert to fraction form
    126,399.49/174,438.77 = 72,690.41/x
  3. Step 3: Cross multiply
    126,399.49x = 174,438.77 × 72,690.41
  4. Step 4: Simplify right side
    126,399.49x = 12,680,025,783.84
  5. Step 5: Solve for x
    x = 12,680,025,783.84/126,399.49
  6. Step 6: Final answer
    x = 100,317.07

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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.