Home / 165,530,653.72-248,209,765.28-78,068,687.12

Finding the Fourth Proportional to 165,530,653.72, 248,209,765.28 and 78,068,687.12

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Solution

The fourth proportional to 165,530,653.72, 248,209,765.28 and 78,068,687.12 is: 117,062,369.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,530,653.72 : 248,209,765.28 = 78,068,687.12 : x
  2. Step 2: Convert to fraction form
    165,530,653.72/248,209,765.28 = 78,068,687.12/x
  3. Step 3: Cross multiply
    165,530,653.72x = 248,209,765.28 × 78,068,687.12
  4. Step 4: Simplify right side
    165,530,653.72x = 19,377,410,505,772,960
  5. Step 5: Solve for x
    x = 19,377,410,505,772,960/165,530,653.72
  6. Step 6: Final answer
    x = 117,062,369.24

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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.