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Finding the Fourth Proportional to 99,743,430.80, 149,709,624.60 and 61,479,678.80

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Solution

The fourth proportional to 99,743,430.80, 149,709,624.60 and 61,479,678.80 is: 92,277,752.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,743,430.80 : 149,709,624.60 = 61,479,678.80 : x
  2. Step 2: Convert to fraction form
    99,743,430.80/149,709,624.60 = 61,479,678.80/x
  3. Step 3: Cross multiply
    99,743,430.80x = 149,709,624.60 × 61,479,678.80
  4. Step 4: Simplify right side
    99,743,430.80x = 9,204,099,633,676,578
  5. Step 5: Solve for x
    x = 9,204,099,633,676,578/99,743,430.80
  6. Step 6: Final answer
    x = 92,277,752.63

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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.