Home / 126,615.27-174,782.88-78,892.20

Finding the Fourth Proportional to 126,615.27, 174,782.88 and 78,892.20

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Solution

The fourth proportional to 126,615.27, 174,782.88 and 78,892.20 is: 108,904.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,615.27 : 174,782.88 = 78,892.20 : x
  2. Step 2: Convert to fraction form
    126,615.27/174,782.88 = 78,892.20/x
  3. Step 3: Cross multiply
    126,615.27x = 174,782.88 × 78,892.20
  4. Step 4: Simplify right side
    126,615.27x = 13,789,005,925.54
  5. Step 5: Solve for x
    x = 13,789,005,925.54/126,615.27
  6. Step 6: Final answer
    x = 108,904.76

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1.5x scale

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.