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Finding the Fourth Proportional to 123,257.86, 170,092.39 and 69,547.87

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Solution

The fourth proportional to 123,257.86, 170,092.39 and 69,547.87 is: 95,974.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,257.86 : 170,092.39 = 69,547.87 : x
  2. Step 2: Convert to fraction form
    123,257.86/170,092.39 = 69,547.87/x
  3. Step 3: Cross multiply
    123,257.86x = 170,092.39 × 69,547.87
  4. Step 4: Simplify right side
    123,257.86x = 11,829,563,427.71
  5. Step 5: Solve for x
    x = 11,829,563,427.71/123,257.86
  6. Step 6: Final answer
    x = 95,974.11

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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.