Home / 102,034.08-140,654.88-71,720.64

Finding the Fourth Proportional to 102,034.08, 140,654.88 and 71,720.64

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Solution

The fourth proportional to 102,034.08, 140,654.88 and 71,720.64 is: 98,867.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,034.08 : 140,654.88 = 71,720.64 : x
  2. Step 2: Convert to fraction form
    102,034.08/140,654.88 = 71,720.64/x
  3. Step 3: Cross multiply
    102,034.08x = 140,654.88 × 71,720.64
  4. Step 4: Simplify right side
    102,034.08x = 10,087,858,012.72
  5. Step 5: Solve for x
    x = 10,087,858,012.72/102,034.08
  6. Step 6: Final answer
    x = 98,867.54

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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.