Home / 189,021,050-260,847,504.60-105,388,187.12

Finding the Fourth Proportional to 189,021,050, 260,847,504.60 and 105,388,187.12

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Solution

The fourth proportional to 189,021,050, 260,847,504.60 and 105,388,187.12 is: 145,434,837.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,021,050 : 260,847,504.60 = 105,388,187.12 : x
  2. Step 2: Convert to fraction form
    189,021,050/260,847,504.60 = 105,388,187.12/x
  3. Step 3: Cross multiply
    189,021,050x = 260,847,504.60 × 105,388,187.12
  4. Step 4: Simplify right side
    189,021,050x = 27,490,245,624,569,860
  5. Step 5: Solve for x
    x = 27,490,245,624,569,860/189,021,050
  6. Step 6: Final answer
    x = 145,434,837.15

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.