Home / 93,067.80-128,375.92-81,159.72

Finding the Fourth Proportional to 93,067.80, 128,375.92 and 81,159.72

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Solution

The fourth proportional to 93,067.80, 128,375.92 and 81,159.72 is: 111,950.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,067.80 : 128,375.92 = 81,159.72 : x
  2. Step 2: Convert to fraction form
    93,067.80/128,375.92 = 81,159.72/x
  3. Step 3: Cross multiply
    93,067.80x = 128,375.92 × 81,159.72
  4. Step 4: Simplify right side
    93,067.80x = 10,418,953,721.94
  5. Step 5: Solve for x
    x = 10,418,953,721.94/93,067.80
  6. Step 6: Final answer
    x = 111,950.15

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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.