Home / 143,993,409.12-198,709,412.22-77,912,449.62

Finding the Fourth Proportional to 143,993,409.12, 198,709,412.22 and 77,912,449.62

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Solution

The fourth proportional to 143,993,409.12, 198,709,412.22 and 77,912,449.62 is: 107,518,372.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,993,409.12 : 198,709,412.22 = 77,912,449.62 : x
  2. Step 2: Convert to fraction form
    143,993,409.12/198,709,412.22 = 77,912,449.62/x
  3. Step 3: Cross multiply
    143,993,409.12x = 198,709,412.22 × 77,912,449.62
  4. Step 4: Simplify right side
    143,993,409.12x = 15,481,937,068,610,564
  5. Step 5: Solve for x
    x = 15,481,937,068,610,564/143,993,409.12
  6. Step 6: Final answer
    x = 107,518,372.98

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