Home / 132,417.36-182,794.86-78,719.76

Finding the Fourth Proportional to 132,417.36, 182,794.86 and 78,719.76

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Solution

The fourth proportional to 132,417.36, 182,794.86 and 78,719.76 is: 108,668.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,417.36 : 182,794.86 = 78,719.76 : x
  2. Step 2: Convert to fraction form
    132,417.36/182,794.86 = 78,719.76/x
  3. Step 3: Cross multiply
    132,417.36x = 182,794.86 × 78,719.76
  4. Step 4: Simplify right side
    132,417.36x = 14,389,567,508.43
  5. Step 5: Solve for x
    x = 14,389,567,508.43/132,417.36
  6. Step 6: Final answer
    x = 108,668.29

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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.