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Finding the Fourth Proportional to 98,896,844.40, 148,345,266.60 and 68,285,842.80

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Solution

The fourth proportional to 98,896,844.40, 148,345,266.60 and 68,285,842.80 is: 102,428,764.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,896,844.40 : 148,345,266.60 = 68,285,842.80 : x
  2. Step 2: Convert to fraction form
    98,896,844.40/148,345,266.60 = 68,285,842.80/x
  3. Step 3: Cross multiply
    98,896,844.40x = 148,345,266.60 × 68,285,842.80
  4. Step 4: Simplify right side
    98,896,844.40x = 10,129,881,555,171,690
  5. Step 5: Solve for x
    x = 10,129,881,555,171,690/98,896,844.40
  6. Step 6: Final answer
    x = 102,428,764.20

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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.