Home / 165,378.30-248,067.45-86,516.70

Finding the Fourth Proportional to 165,378.30, 248,067.45 and 86,516.70

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Solution

The fourth proportional to 165,378.30, 248,067.45 and 86,516.70 is: 129,775.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,378.30 : 248,067.45 = 86,516.70 : x
  2. Step 2: Convert to fraction form
    165,378.30/248,067.45 = 86,516.70/x
  3. Step 3: Cross multiply
    165,378.30x = 248,067.45 × 86,516.70
  4. Step 4: Simplify right side
    165,378.30x = 21,461,977,151.42
  5. Step 5: Solve for x
    x = 21,461,977,151.42/165,378.30
  6. Step 6: Final answer
    x = 129,775.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.