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Finding the Fourth Proportional to 86,902.73, 130,200.77 and 76,108.64

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Solution

The fourth proportional to 86,902.73, 130,200.77 and 76,108.64 is: 114,028.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,902.73 : 130,200.77 = 76,108.64 : x
  2. Step 2: Convert to fraction form
    86,902.73/130,200.77 = 76,108.64/x
  3. Step 3: Cross multiply
    86,902.73x = 130,200.77 × 76,108.64
  4. Step 4: Simplify right side
    86,902.73x = 9,909,403,070.92
  5. Step 5: Solve for x
    x = 9,909,403,070.92/86,902.73
  6. Step 6: Final answer
    x = 114,028.68

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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.