Home / 84,231.54-126,322.61-69,403.68

Finding the Fourth Proportional to 84,231.54, 126,322.61 and 69,403.68

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Solution

The fourth proportional to 84,231.54, 126,322.61 and 69,403.68 is: 104,085.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,231.54 : 126,322.61 = 69,403.68 : x
  2. Step 2: Convert to fraction form
    84,231.54/126,322.61 = 69,403.68/x
  3. Step 3: Cross multiply
    84,231.54x = 126,322.61 × 69,403.68
  4. Step 4: Simplify right side
    84,231.54x = 8,767,253,654.19
  5. Step 5: Solve for x
    x = 8,767,253,654.19/84,231.54
  6. Step 6: Final answer
    x = 104,085.16

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.