Home / 126,190.60-174,142.66-72,479.08

Finding the Fourth Proportional to 126,190.60, 174,142.66 and 72,479.08

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Solution

The fourth proportional to 126,190.60, 174,142.66 and 72,479.08 is: 100,020.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,190.60 : 174,142.66 = 72,479.08 : x
  2. Step 2: Convert to fraction form
    126,190.60/174,142.66 = 72,479.08/x
  3. Step 3: Cross multiply
    126,190.60x = 174,142.66 × 72,479.08
  4. Step 4: Simplify right side
    126,190.60x = 12,621,699,785.55
  5. Step 5: Solve for x
    x = 12,621,699,785.55/126,190.60
  6. Step 6: Final answer
    x = 100,020.92

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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.