Home / 143,564,790.42-198,118,403.01-78,374,694.42

Finding the Fourth Proportional to 143,564,790.42, 198,118,403.01 and 78,374,694.42

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Solution

The fourth proportional to 143,564,790.42, 198,118,403.01 and 78,374,694.42 is: 108,156,528.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,564,790.42 : 198,118,403.01 = 78,374,694.42 : x
  2. Step 2: Convert to fraction form
    143,564,790.42/198,118,403.01 = 78,374,694.42/x
  3. Step 3: Cross multiply
    143,564,790.42x = 198,118,403.01 × 78,374,694.42
  4. Step 4: Simplify right side
    143,564,790.42x = 15,527,469,294,887,158
  5. Step 5: Solve for x
    x = 15,527,469,294,887,158/143,564,790.42
  6. Step 6: Final answer
    x = 108,156,528.14

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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.