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Finding the Fourth Proportional to 126,798.08, 174,931.44 and 81,469.28

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Solution

The fourth proportional to 126,798.08, 174,931.44 and 81,469.28 is: 112,395.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,798.08 : 174,931.44 = 81,469.28 : x
  2. Step 2: Convert to fraction form
    126,798.08/174,931.44 = 81,469.28/x
  3. Step 3: Cross multiply
    126,798.08x = 174,931.44 × 81,469.28
  4. Step 4: Simplify right side
    126,798.08x = 14,251,538,466.16
  5. Step 5: Solve for x
    x = 14,251,538,466.16/126,798.08
  6. Step 6: Final answer
    x = 112,395.54

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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.