Home / 132,418.36-182,796.24-78,720.76

Finding the Fourth Proportional to 132,418.36, 182,796.24 and 78,720.76

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Solution

The fourth proportional to 132,418.36, 182,796.24 and 78,720.76 is: 108,669.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,418.36 : 182,796.24 = 78,720.76 : x
  2. Step 2: Convert to fraction form
    132,418.36/182,796.24 = 78,720.76/x
  3. Step 3: Cross multiply
    132,418.36x = 182,796.24 × 78,720.76
  4. Step 4: Simplify right side
    132,418.36x = 14,389,858,937.94
  5. Step 5: Solve for x
    x = 14,389,858,937.94/132,418.36
  6. Step 6: Final answer
    x = 108,669.67

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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.