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Finding the Fourth Proportional to 99,651,451.80, 149,477,177.70 and 61,188,245.40

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Solution

The fourth proportional to 99,651,451.80, 149,477,177.70 and 61,188,245.40 is: 91,782,368.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,651,451.80 : 149,477,177.70 = 61,188,245.40 : x
  2. Step 2: Convert to fraction form
    99,651,451.80/149,477,177.70 = 61,188,245.40/x
  3. Step 3: Cross multiply
    99,651,451.80x = 149,477,177.70 × 61,188,245.40
  4. Step 4: Simplify right side
    99,651,451.80x = 9,146,246,230,807,006
  5. Step 5: Solve for x
    x = 9,146,246,230,807,006/99,651,451.80
  6. Step 6: Final answer
    x = 91,782,368.10

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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.