Home / 126,615.21-174,782.79-78,892.14

Finding the Fourth Proportional to 126,615.21, 174,782.79 and 78,892.14

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Solution

The fourth proportional to 126,615.21, 174,782.79 and 78,892.14 is: 108,904.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,615.21 : 174,782.79 = 78,892.14 : x
  2. Step 2: Convert to fraction form
    126,615.21/174,782.79 = 78,892.14/x
  3. Step 3: Cross multiply
    126,615.21x = 174,782.79 × 78,892.14
  4. Step 4: Simplify right side
    126,615.21x = 13,788,988,338.27
  5. Step 5: Solve for x
    x = 13,788,988,338.27/126,615.21
  6. Step 6: Final answer
    x = 108,904.68

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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.