Home / 126,504.72-174,657.02-78,828.12

Finding the Fourth Proportional to 126,504.72, 174,657.02 and 78,828.12

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Solution

The fourth proportional to 126,504.72, 174,657.02 and 78,828.12 is: 108,832.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,504.72 : 174,657.02 = 78,828.12 : x
  2. Step 2: Convert to fraction form
    126,504.72/174,657.02 = 78,828.12/x
  3. Step 3: Cross multiply
    126,504.72x = 174,657.02 × 78,828.12
  4. Step 4: Simplify right side
    126,504.72x = 13,767,884,531.40
  5. Step 5: Solve for x
    x = 13,767,884,531.40/126,504.72
  6. Step 6: Final answer
    x = 108,832.97

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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.