Home / 111,380,856.30-167,071,284.45-81,147,768.30

Finding the Fourth Proportional to 111,380,856.30, 167,071,284.45 and 81,147,768.30

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Solution

The fourth proportional to 111,380,856.30, 167,071,284.45 and 81,147,768.30 is: 121,721,652.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,380,856.30 : 167,071,284.45 = 81,147,768.30 : x
  2. Step 2: Convert to fraction form
    111,380,856.30/167,071,284.45 = 81,147,768.30/x
  3. Step 3: Cross multiply
    111,380,856.30x = 167,071,284.45 × 81,147,768.30
  4. Step 4: Simplify right side
    111,380,856.30x = 13,557,461,880,131,992
  5. Step 5: Solve for x
    x = 13,557,461,880,131,992/111,380,856.30
  6. Step 6: Final answer
    x = 121,721,652.45

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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.