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Finding the Fourth Proportional to 98,168.63, 135,469.68 and 57,884.90

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Solution

The fourth proportional to 98,168.63, 135,469.68 and 57,884.90 is: 79,879.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,168.63 : 135,469.68 = 57,884.90 : x
  2. Step 2: Convert to fraction form
    98,168.63/135,469.68 = 57,884.90/x
  3. Step 3: Cross multiply
    98,168.63x = 135,469.68 × 57,884.90
  4. Step 4: Simplify right side
    98,168.63x = 7,841,648,879.83
  5. Step 5: Solve for x
    x = 7,841,648,879.83/98,168.63
  6. Step 6: Final answer
    x = 79,879.38

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1.5x scale

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.