Home / 138,953.31-191,821.69-93,091.92

Finding the Fourth Proportional to 138,953.31, 191,821.69 and 93,091.92

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Solution

The fourth proportional to 138,953.31, 191,821.69 and 93,091.92 is: 128,511.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,953.31 : 191,821.69 = 93,091.92 : x
  2. Step 2: Convert to fraction form
    138,953.31/191,821.69 = 93,091.92/x
  3. Step 3: Cross multiply
    138,953.31x = 191,821.69 × 93,091.92
  4. Step 4: Simplify right side
    138,953.31x = 17,857,049,187.02
  5. Step 5: Solve for x
    x = 17,857,049,187.02/138,953.31
  6. Step 6: Final answer
    x = 128,511.15

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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.