Home / 107,982,138.40-161,987,415.60-39,872,672.80

Finding the Fourth Proportional to 107,982,138.40, 161,987,415.60 and 39,872,672.80

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Solution

The fourth proportional to 107,982,138.40, 161,987,415.60 and 39,872,672.80 is: 59,814,255.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,982,138.40 : 161,987,415.60 = 39,872,672.80 : x
  2. Step 2: Convert to fraction form
    107,982,138.40/161,987,415.60 = 39,872,672.80/x
  3. Step 3: Cross multiply
    107,982,138.40x = 161,987,415.60 × 39,872,672.80
  4. Step 4: Simplify right side
    107,982,138.40x = 6,458,871,219,936,415
  5. Step 5: Solve for x
    x = 6,458,871,219,936,415/107,982,138.40
  6. Step 6: Final answer
    x = 59,814,255.54

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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.