Home / 98,443.08-135,565.55-85,516.43

Finding the Fourth Proportional to 98,443.08, 135,565.55 and 85,516.43

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Solution

The fourth proportional to 98,443.08, 135,565.55 and 85,516.43 is: 117,764.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,443.08 : 135,565.55 = 85,516.43 : x
  2. Step 2: Convert to fraction form
    98,443.08/135,565.55 = 85,516.43/x
  3. Step 3: Cross multiply
    98,443.08x = 135,565.55 × 85,516.43
  4. Step 4: Simplify right side
    98,443.08x = 11,593,081,082.26
  5. Step 5: Solve for x
    x = 11,593,081,082.26/98,443.08
  6. Step 6: Final answer
    x = 117,764.31

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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.