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Finding the Fourth Proportional to 103,469.77, 142,787.53 and 58,146.77

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Solution

The fourth proportional to 103,469.77, 142,787.53 and 58,146.77 is: 80,242.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,469.77 : 142,787.53 = 58,146.77 : x
  2. Step 2: Convert to fraction form
    103,469.77/142,787.53 = 58,146.77/x
  3. Step 3: Cross multiply
    103,469.77x = 142,787.53 × 58,146.77
  4. Step 4: Simplify right side
    103,469.77x = 8,302,633,665.78
  5. Step 5: Solve for x
    x = 8,302,633,665.78/103,469.77
  6. Step 6: Final answer
    x = 80,242.12

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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.