Home / 135,276.66-186,711.21-78,695.46

Finding the Fourth Proportional to 135,276.66, 186,711.21 and 78,695.46

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Solution

The fourth proportional to 135,276.66, 186,711.21 and 78,695.46 is: 108,616.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,276.66 : 186,711.21 = 78,695.46 : x
  2. Step 2: Convert to fraction form
    135,276.66/186,711.21 = 78,695.46/x
  3. Step 3: Cross multiply
    135,276.66x = 186,711.21 × 78,695.46
  4. Step 4: Simplify right side
    135,276.66x = 14,693,324,558.11
  5. Step 5: Solve for x
    x = 14,693,324,558.11/135,276.66
  6. Step 6: Final answer
    x = 108,616.85

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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.