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Finding the Fourth Proportional to 118,686.73, 178,045.73 and 38,696.61

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Solution

The fourth proportional to 118,686.73, 178,045.73 and 38,696.61 is: 58,050.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,686.73 : 178,045.73 = 38,696.61 : x
  2. Step 2: Convert to fraction form
    118,686.73/178,045.73 = 38,696.61/x
  3. Step 3: Cross multiply
    118,686.73x = 178,045.73 × 38,696.61
  4. Step 4: Simplify right side
    118,686.73x = 6,889,765,730.86
  5. Step 5: Solve for x
    x = 6,889,765,730.86/118,686.73
  6. Step 6: Final answer
    x = 58,050.01

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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.