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Finding the Fourth Proportional to 103,269, 142,512.78 and 60,247.32

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Solution

The fourth proportional to 103,269, 142,512.78 and 60,247.32 is: 83,142.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,269 : 142,512.78 = 60,247.32 : x
  2. Step 2: Convert to fraction form
    103,269/142,512.78 = 60,247.32/x
  3. Step 3: Cross multiply
    103,269x = 142,512.78 × 60,247.32
  4. Step 4: Simplify right side
    103,269x = 8,586,013,060.75
  5. Step 5: Solve for x
    x = 8,586,013,060.75/103,269
  6. Step 6: Final answer
    x = 83,142.21

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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.