Home / 99,807,999.20-149,711,998.80-56,809,829.60

Finding the Fourth Proportional to 99,807,999.20, 149,711,998.80 and 56,809,829.60

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Solution

The fourth proportional to 99,807,999.20, 149,711,998.80 and 56,809,829.60 is: 85,214,744.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,807,999.20 : 149,711,998.80 = 56,809,829.60 : x
  2. Step 2: Convert to fraction form
    99,807,999.20/149,711,998.80 = 56,809,829.60/x
  3. Step 3: Cross multiply
    99,807,999.20x = 149,711,998.80 × 56,809,829.60
  4. Step 4: Simplify right side
    99,807,999.20x = 8,505,113,140,903,405
  5. Step 5: Solve for x
    x = 8,505,113,140,903,405/99,807,999.20
  6. Step 6: Final answer
    x = 85,214,744.40

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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.