Home / 126,186.21-174,136.64-72,474.71

Finding the Fourth Proportional to 126,186.21, 174,136.64 and 72,474.71

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Solution

The fourth proportional to 126,186.21, 174,136.64 and 72,474.71 is: 100,014.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,186.21 : 174,136.64 = 72,474.71 : x
  2. Step 2: Convert to fraction form
    126,186.21/174,136.64 = 72,474.71/x
  3. Step 3: Cross multiply
    126,186.21x = 174,136.64 × 72,474.71
  4. Step 4: Simplify right side
    126,186.21x = 12,620,501,251.32
  5. Step 5: Solve for x
    x = 12,620,501,251.32/126,186.21
  6. Step 6: Final answer
    x = 100,014.90

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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.