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Finding the Fourth Proportional to 126,796.84, 174,934.02 and 76,477.48

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Solution

The fourth proportional to 126,796.84, 174,934.02 and 76,477.48 is: 105,511.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,796.84 : 174,934.02 = 76,477.48 : x
  2. Step 2: Convert to fraction form
    126,796.84/174,934.02 = 76,477.48/x
  3. Step 3: Cross multiply
    126,796.84x = 174,934.02 × 76,477.48
  4. Step 4: Simplify right side
    126,796.84x = 13,378,513,015.87
  5. Step 5: Solve for x
    x = 13,378,513,015.87/126,796.84
  6. Step 6: Final answer
    x = 105,511.41

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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.