Home / 100,565.22-138,790.89-64,299.54

Finding the Fourth Proportional to 100,565.22, 138,790.89 and 64,299.54

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Solution

The fourth proportional to 100,565.22, 138,790.89 and 64,299.54 is: 88,740.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,565.22 : 138,790.89 = 64,299.54 : x
  2. Step 2: Convert to fraction form
    100,565.22/138,790.89 = 64,299.54/x
  3. Step 3: Cross multiply
    100,565.22x = 138,790.89 × 64,299.54
  4. Step 4: Simplify right side
    100,565.22x = 8,924,190,383.19
  5. Step 5: Solve for x
    x = 8,924,190,383.19/100,565.22
  6. Step 6: Final answer
    x = 88,740.33

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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.