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Finding the Fourth Proportional to 126,615.53, 174,783.23 and 78,892.46

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Solution

The fourth proportional to 126,615.53, 174,783.23 and 78,892.46 is: 108,905.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,615.53 : 174,783.23 = 78,892.46 : x
  2. Step 2: Convert to fraction form
    126,615.53/174,783.23 = 78,892.46/x
  3. Step 3: Cross multiply
    126,615.53x = 174,783.23 × 78,892.46
  4. Step 4: Simplify right side
    126,615.53x = 13,789,077,713.07
  5. Step 5: Solve for x
    x = 13,789,077,713.07/126,615.53
  6. Step 6: Final answer
    x = 108,905.11

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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.