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Finding the Fourth Proportional to 123,573.89, 170,537.66 and 69,861.17

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Solution

The fourth proportional to 123,573.89, 170,537.66 and 69,861.17 is: 96,411.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,573.89 : 170,537.66 = 69,861.17 : x
  2. Step 2: Convert to fraction form
    123,573.89/170,537.66 = 69,861.17/x
  3. Step 3: Cross multiply
    123,573.89x = 170,537.66 × 69,861.17
  4. Step 4: Simplify right side
    123,573.89x = 11,913,959,254.67
  5. Step 5: Solve for x
    x = 11,913,959,254.67/123,573.89
  6. Step 6: Final answer
    x = 96,411.63

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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.