Home / 86,143.23-118,892.31-55,507.68

Finding the Fourth Proportional to 86,143.23, 118,892.31 and 55,507.68

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Solution

The fourth proportional to 86,143.23, 118,892.31 and 55,507.68 is: 76,610.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,143.23 : 118,892.31 = 55,507.68 : x
  2. Step 2: Convert to fraction form
    86,143.23/118,892.31 = 55,507.68/x
  3. Step 3: Cross multiply
    86,143.23x = 118,892.31 × 55,507.68
  4. Step 4: Simplify right side
    86,143.23x = 6,599,436,297.94
  5. Step 5: Solve for x
    x = 6,599,436,297.94/86,143.23
  6. Step 6: Final answer
    x = 76,610.04

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1.5x scale

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.