Home / 147,623,998.20-221,435,997.30-78,749,244.60

Finding the Fourth Proportional to 147,623,998.20, 221,435,997.30 and 78,749,244.60

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Solution

The fourth proportional to 147,623,998.20, 221,435,997.30 and 78,749,244.60 is: 118,123,866.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,623,998.20 : 221,435,997.30 = 78,749,244.60 : x
  2. Step 2: Convert to fraction form
    147,623,998.20/221,435,997.30 = 78,749,244.60/x
  3. Step 3: Cross multiply
    147,623,998.20x = 221,435,997.30 × 78,749,244.60
  4. Step 4: Simplify right side
    147,623,998.20x = 17,437,917,514,622,640
  5. Step 5: Solve for x
    x = 17,437,917,514,622,640/147,623,998.20
  6. Step 6: Final answer
    x = 118,123,866.90

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1.5x scale

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.