Home / 123,196.31-170,011.17-66,607.68

Finding the Fourth Proportional to 123,196.31, 170,011.17 and 66,607.68

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Solution

The fourth proportional to 123,196.31, 170,011.17 and 66,607.68 is: 91,918.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,196.31 : 170,011.17 = 66,607.68 : x
  2. Step 2: Convert to fraction form
    123,196.31/170,011.17 = 66,607.68/x
  3. Step 3: Cross multiply
    123,196.31x = 170,011.17 × 66,607.68
  4. Step 4: Simplify right side
    123,196.31x = 11,324,049,607.79
  5. Step 5: Solve for x
    x = 11,324,049,607.79/123,196.31
  6. Step 6: Final answer
    x = 91,918.74

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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.