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Finding the Fourth Proportional to 98,302.43, 135,602.57 and 68,105.43

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Solution

The fourth proportional to 98,302.43, 135,602.57 and 68,105.43 is: 93,947.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,302.43 : 135,602.57 = 68,105.43 : x
  2. Step 2: Convert to fraction form
    98,302.43/135,602.57 = 68,105.43/x
  3. Step 3: Cross multiply
    98,302.43x = 135,602.57 × 68,105.43
  4. Step 4: Simplify right side
    98,302.43x = 9,235,271,509.22
  5. Step 5: Solve for x
    x = 9,235,271,509.22/98,302.43
  6. Step 6: Final answer
    x = 93,947.54

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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.