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Finding the Fourth Proportional to 175,438.78, 242,108.12 and 98,961.52

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Solution

The fourth proportional to 175,438.78, 242,108.12 and 98,961.52 is: 136,568.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    175,438.78 : 242,108.12 = 98,961.52 : x
  2. Step 2: Convert to fraction form
    175,438.78/242,108.12 = 98,961.52/x
  3. Step 3: Cross multiply
    175,438.78x = 242,108.12 × 98,961.52
  4. Step 4: Simplify right side
    175,438.78x = 23,959,387,559.54
  5. Step 5: Solve for x
    x = 23,959,387,559.54/175,438.78
  6. Step 6: Final answer
    x = 136,568.37

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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.