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Finding the Fourth Proportional to 100,098,012.40, 150,147,018.60 and 78,598,927.60

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Solution

The fourth proportional to 100,098,012.40, 150,147,018.60 and 78,598,927.60 is: 117,898,391.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,098,012.40 : 150,147,018.60 = 78,598,927.60 : x
  2. Step 2: Convert to fraction form
    100,098,012.40/150,147,018.60 = 78,598,927.60/x
  3. Step 3: Cross multiply
    100,098,012.40x = 150,147,018.60 × 78,598,927.60
  4. Step 4: Simplify right side
    100,098,012.40x = 11,801,394,644,297,252
  5. Step 5: Solve for x
    x = 11,801,394,644,297,252/100,098,012.40
  6. Step 6: Final answer
    x = 117,898,391.40

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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.