Home / 86,855.96-130,087.08-68,018.60

Finding the Fourth Proportional to 86,855.96, 130,087.08 and 68,018.60

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Solution

The fourth proportional to 86,855.96, 130,087.08 and 68,018.60 is: 101,873.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,855.96 : 130,087.08 = 68,018.60 : x
  2. Step 2: Convert to fraction form
    86,855.96/130,087.08 = 68,018.60/x
  3. Step 3: Cross multiply
    86,855.96x = 130,087.08 × 68,018.60
  4. Step 4: Simplify right side
    86,855.96x = 8,848,341,059.69
  5. Step 5: Solve for x
    x = 8,848,341,059.69/86,855.96
  6. Step 6: Final answer
    x = 101,873.74

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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.