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Finding the Fourth Proportional to 98,000.88, 135,217.56 and 62,178

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Solution

The fourth proportional to 98,000.88, 135,217.56 and 62,178 is: 85,790.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,000.88 : 135,217.56 = 62,178 : x
  2. Step 2: Convert to fraction form
    98,000.88/135,217.56 = 62,178/x
  3. Step 3: Cross multiply
    98,000.88x = 135,217.56 × 62,178
  4. Step 4: Simplify right side
    98,000.88x = 8,407,557,445.68
  5. Step 5: Solve for x
    x = 8,407,557,445.68/98,000.88
  6. Step 6: Final answer
    x = 85,790.63

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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.