Home / 126,036.80-188,666.40-73,289.60

Finding the Fourth Proportional to 126,036.80, 188,666.40 and 73,289.60

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Solution

The fourth proportional to 126,036.80, 188,666.40 and 73,289.60 is: 109,708.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,036.80 : 188,666.40 = 73,289.60 : x
  2. Step 2: Convert to fraction form
    126,036.80/188,666.40 = 73,289.60/x
  3. Step 3: Cross multiply
    126,036.80x = 188,666.40 × 73,289.60
  4. Step 4: Simplify right side
    126,036.80x = 13,827,284,989.44
  5. Step 5: Solve for x
    x = 13,827,284,989.44/126,036.80
  6. Step 6: Final answer
    x = 109,708.32

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.