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Finding the Fourth Proportional to 123,655.41, 170,665.79 and 69,957.09

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Solution

The fourth proportional to 123,655.41, 170,665.79 and 69,957.09 is: 96,552.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,655.41 : 170,665.79 = 69,957.09 : x
  2. Step 2: Convert to fraction form
    123,655.41/170,665.79 = 69,957.09/x
  3. Step 3: Cross multiply
    123,655.41x = 170,665.79 × 69,957.09
  4. Step 4: Simplify right side
    123,655.41x = 11,939,281,681.17
  5. Step 5: Solve for x
    x = 11,939,281,681.17/123,655.41
  6. Step 6: Final answer
    x = 96,552.85

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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.