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Finding the Fourth Proportional to 126,374.70, 174,411.99 and 72,661.98

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Solution

The fourth proportional to 126,374.70, 174,411.99 and 72,661.98 is: 100,282.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,374.70 : 174,411.99 = 72,661.98 : x
  2. Step 2: Convert to fraction form
    126,374.70/174,411.99 = 72,661.98/x
  3. Step 3: Cross multiply
    126,374.70x = 174,411.99 × 72,661.98
  4. Step 4: Simplify right side
    126,374.70x = 12,673,120,529.14
  5. Step 5: Solve for x
    x = 12,673,120,529.14/126,374.70
  6. Step 6: Final answer
    x = 100,282.10

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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.