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Finding the Fourth Proportional to 123,427.53, 170,212.98 and 85,125.87

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Solution

The fourth proportional to 123,427.53, 170,212.98 and 85,125.87 is: 117,393.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,427.53 : 170,212.98 = 85,125.87 : x
  2. Step 2: Convert to fraction form
    123,427.53/170,212.98 = 85,125.87/x
  3. Step 3: Cross multiply
    123,427.53x = 170,212.98 × 85,125.87
  4. Step 4: Simplify right side
    123,427.53x = 14,489,527,156.73
  5. Step 5: Solve for x
    x = 14,489,527,156.73/123,427.53
  6. Step 6: Final answer
    x = 117,393.00

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.