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Finding the Fourth Proportional to 118,753.29, 178,146.34 and 39,890.07

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Solution

The fourth proportional to 118,753.29, 178,146.34 and 39,890.07 is: 59,840.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,753.29 : 178,146.34 = 39,890.07 : x
  2. Step 2: Convert to fraction form
    118,753.29/178,146.34 = 39,890.07/x
  3. Step 3: Cross multiply
    118,753.29x = 178,146.34 × 39,890.07
  4. Step 4: Simplify right side
    118,753.29x = 7,106,269,873.12
  5. Step 5: Solve for x
    x = 7,106,269,873.12/118,753.29
  6. Step 6: Final answer
    x = 59,840.61

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.