Home / 128,722,852.80-193,093,610.40-77,494,564.80

Finding the Fourth Proportional to 128,722,852.80, 193,093,610.40 and 77,494,564.80

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Solution

The fourth proportional to 128,722,852.80, 193,093,610.40 and 77,494,564.80 is: 116,247,464.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,722,852.80 : 193,093,610.40 = 77,494,564.80 : x
  2. Step 2: Convert to fraction form
    128,722,852.80/193,093,610.40 = 77,494,564.80/x
  3. Step 3: Cross multiply
    128,722,852.80x = 193,093,610.40 × 77,494,564.80
  4. Step 4: Simplify right side
    128,722,852.80x = 14,963,705,303,608,754
  5. Step 5: Solve for x
    x = 14,963,705,303,608,754/128,722,852.80
  6. Step 6: Final answer
    x = 116,247,464.83

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.