Home / 138,254,456.92-190,796,946.78-79,517,138.44

Finding the Fourth Proportional to 138,254,456.92, 190,796,946.78 and 79,517,138.44

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Solution

The fourth proportional to 138,254,456.92, 190,796,946.78 and 79,517,138.44 is: 109,736,984.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,254,456.92 : 190,796,946.78 = 79,517,138.44 : x
  2. Step 2: Convert to fraction form
    138,254,456.92/190,796,946.78 = 79,517,138.44/x
  3. Step 3: Cross multiply
    138,254,456.92x = 190,796,946.78 × 79,517,138.44
  4. Step 4: Simplify right side
    138,254,456.92x = 15,171,627,231,034,572
  5. Step 5: Solve for x
    x = 15,171,627,231,034,572/138,254,456.92
  6. Step 6: Final answer
    x = 109,736,984.75

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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.