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Finding the Fourth Proportional to 118,992.20, 178,370 and 59,646.74

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Solution

The fourth proportional to 118,992.20, 178,370 and 59,646.74 is: 89,410.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,992.20 : 178,370 = 59,646.74 : x
  2. Step 2: Convert to fraction form
    118,992.20/178,370 = 59,646.74/x
  3. Step 3: Cross multiply
    118,992.20x = 178,370 × 59,646.74
  4. Step 4: Simplify right side
    118,992.20x = 10,639,189,013.80
  5. Step 5: Solve for x
    x = 10,639,189,013.80/118,992.20
  6. Step 6: Final answer
    x = 89,410.81

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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.