Home / 126,168.08-174,104-72,415.28

Finding the Fourth Proportional to 126,168.08, 174,104 and 72,415.28

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Solution

The fourth proportional to 126,168.08, 174,104 and 72,415.28 is: 99,928.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,168.08 : 174,104 = 72,415.28 : x
  2. Step 2: Convert to fraction form
    126,168.08/174,104 = 72,415.28/x
  3. Step 3: Cross multiply
    126,168.08x = 174,104 × 72,415.28
  4. Step 4: Simplify right side
    126,168.08x = 12,607,789,909.12
  5. Step 5: Solve for x
    x = 12,607,789,909.12/126,168.08
  6. Step 6: Final answer
    x = 99,928.52

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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.