Home / 140,413,806.40-193,769,998.64-78,534,144.64

Finding the Fourth Proportional to 140,413,806.40, 193,769,998.64 and 78,534,144.64

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Solution

The fourth proportional to 140,413,806.40, 193,769,998.64 and 78,534,144.64 is: 108,376,529.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,413,806.40 : 193,769,998.64 = 78,534,144.64 : x
  2. Step 2: Convert to fraction form
    140,413,806.40/193,769,998.64 = 78,534,144.64/x
  3. Step 3: Cross multiply
    140,413,806.40x = 193,769,998.64 × 78,534,144.64
  4. Step 4: Simplify right side
    140,413,806.40x = 15,217,561,100,086,362
  5. Step 5: Solve for x
    x = 15,217,561,100,086,362/140,413,806.40
  6. Step 6: Final answer
    x = 108,376,529.99

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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.