Home / 126,546.83-174,669.27-78,771.81

Finding the Fourth Proportional to 126,546.83, 174,669.27 and 78,771.81

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Solution

The fourth proportional to 126,546.83, 174,669.27 and 78,771.81 is: 108,726.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,546.83 : 174,669.27 = 78,771.81 : x
  2. Step 2: Convert to fraction form
    126,546.83/174,669.27 = 78,771.81/x
  3. Step 3: Cross multiply
    126,546.83x = 174,669.27 × 78,771.81
  4. Step 4: Simplify right side
    126,546.83x = 13,759,014,549.28
  5. Step 5: Solve for x
    x = 13,759,014,549.28/126,546.83
  6. Step 6: Final answer
    x = 108,726.66

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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.