Home / 144,146,534.96-198,921,232.32-78,065,513.48

Finding the Fourth Proportional to 144,146,534.96, 198,921,232.32 and 78,065,513.48

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Solution

The fourth proportional to 144,146,534.96, 198,921,232.32 and 78,065,513.48 is: 107,729,874.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,146,534.96 : 198,921,232.32 = 78,065,513.48 : x
  2. Step 2: Convert to fraction form
    144,146,534.96/198,921,232.32 = 78,065,513.48/x
  3. Step 3: Cross multiply
    144,146,534.96x = 198,921,232.32 × 78,065,513.48
  4. Step 4: Simplify right side
    144,146,534.96x = 15,528,888,143,135,172
  5. Step 5: Solve for x
    x = 15,528,888,143,135,172/144,146,534.96
  6. Step 6: Final answer
    x = 107,729,874.65

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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.