Home / 128,735,814.40-193,103,721.60-127,840,019.20

Finding the Fourth Proportional to 128,735,814.40, 193,103,721.60 and 127,840,019.20

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Solution

The fourth proportional to 128,735,814.40, 193,103,721.60 and 127,840,019.20 is: 191,760,028.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,735,814.40 : 193,103,721.60 = 127,840,019.20 : x
  2. Step 2: Convert to fraction form
    128,735,814.40/193,103,721.60 = 127,840,019.20/x
  3. Step 3: Cross multiply
    128,735,814.40x = 193,103,721.60 × 127,840,019.20
  4. Step 4: Simplify right side
    128,735,814.40x = 24,686,383,476,935,456
  5. Step 5: Solve for x
    x = 24,686,383,476,935,456/128,735,814.40
  6. Step 6: Final answer
    x = 191,760,028.80

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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.