Home / 98,328.13-135,743.85-66,231.47

Finding the Fourth Proportional to 98,328.13, 135,743.85 and 66,231.47

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Solution

The fourth proportional to 98,328.13, 135,743.85 and 66,231.47 is: 91,433.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,328.13 : 135,743.85 = 66,231.47 : x
  2. Step 2: Convert to fraction form
    98,328.13/135,743.85 = 66,231.47/x
  3. Step 3: Cross multiply
    98,328.13x = 135,743.85 × 66,231.47
  4. Step 4: Simplify right side
    98,328.13x = 8,990,514,728.96
  5. Step 5: Solve for x
    x = 8,990,514,728.96/98,328.13
  6. Step 6: Final answer
    x = 91,433.81

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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.