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Finding the Fourth Proportional to 126,564.66, 174,662.73 and 69,978.06

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Solution

The fourth proportional to 126,564.66, 174,662.73 and 69,978.06 is: 96,571.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,564.66 : 174,662.73 = 69,978.06 : x
  2. Step 2: Convert to fraction form
    126,564.66/174,662.73 = 69,978.06/x
  3. Step 3: Cross multiply
    126,564.66x = 174,662.73 × 69,978.06
  4. Step 4: Simplify right side
    126,564.66x = 12,222,558,999.70
  5. Step 5: Solve for x
    x = 12,222,558,999.70/126,564.66
  6. Step 6: Final answer
    x = 96,571.66

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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.