Home / 98,610.16-135,795.36-85,684

Finding the Fourth Proportional to 98,610.16, 135,795.36 and 85,684

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Solution

The fourth proportional to 98,610.16, 135,795.36 and 85,684 is: 117,994.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,610.16 : 135,795.36 = 85,684 : x
  2. Step 2: Convert to fraction form
    98,610.16/135,795.36 = 85,684/x
  3. Step 3: Cross multiply
    98,610.16x = 135,795.36 × 85,684
  4. Step 4: Simplify right side
    98,610.16x = 11,635,489,626.24
  5. Step 5: Solve for x
    x = 11,635,489,626.24/98,610.16
  6. Step 6: Final answer
    x = 117,994.84

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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.