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Finding the Fourth Proportional to 118,988.78, 178,499.88 and 34,755.13

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Solution

The fourth proportional to 118,988.78, 178,499.88 and 34,755.13 is: 52,137.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,988.78 : 178,499.88 = 34,755.13 : x
  2. Step 2: Convert to fraction form
    118,988.78/178,499.88 = 34,755.13/x
  3. Step 3: Cross multiply
    118,988.78x = 178,499.88 × 34,755.13
  4. Step 4: Simplify right side
    118,988.78x = 6,203,786,088.13
  5. Step 5: Solve for x
    x = 6,203,786,088.13/118,988.78
  6. Step 6: Final answer
    x = 52,137.57

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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.