Home / 126,629.16-174,782.79-78,854.28

Finding the Fourth Proportional to 126,629.16, 174,782.79 and 78,854.28

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Solution

The fourth proportional to 126,629.16, 174,782.79 and 78,854.28 is: 108,840.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,629.16 : 174,782.79 = 78,854.28 : x
  2. Step 2: Convert to fraction form
    126,629.16/174,782.79 = 78,854.28/x
  3. Step 3: Cross multiply
    126,629.16x = 174,782.79 × 78,854.28
  4. Step 4: Simplify right side
    126,629.16x = 13,782,371,061.84
  5. Step 5: Solve for x
    x = 13,782,371,061.84/126,629.16
  6. Step 6: Final answer
    x = 108,840.42

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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.