Home / 86,165.18-118,998.60-76,772.60

Finding the Fourth Proportional to 86,165.18, 118,998.60 and 76,772.60

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Solution

The fourth proportional to 86,165.18, 118,998.60 and 76,772.60 is: 106,026.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,165.18 : 118,998.60 = 76,772.60 : x
  2. Step 2: Convert to fraction form
    86,165.18/118,998.60 = 76,772.60/x
  3. Step 3: Cross multiply
    86,165.18x = 118,998.60 × 76,772.60
  4. Step 4: Simplify right side
    86,165.18x = 9,135,831,918.36
  5. Step 5: Solve for x
    x = 9,135,831,918.36/86,165.18
  6. Step 6: Final answer
    x = 106,026.96

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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.