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Finding the Fourth Proportional to 123,580.89, 170,484.51 and 72,577.41

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Solution

The fourth proportional to 123,580.89, 170,484.51 and 72,577.41 is: 100,123.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,580.89 : 170,484.51 = 72,577.41 : x
  2. Step 2: Convert to fraction form
    123,580.89/170,484.51 = 72,577.41/x
  3. Step 3: Cross multiply
    123,580.89x = 170,484.51 × 72,577.41
  4. Step 4: Simplify right side
    123,580.89x = 12,373,324,180.92
  5. Step 5: Solve for x
    x = 12,373,324,180.92/123,580.89
  6. Step 6: Final answer
    x = 100,123.28

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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.