Home / 137,942.26-190,365.90-77,512.71

Finding the Fourth Proportional to 137,942.26, 190,365.90 and 77,512.71

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Solution

The fourth proportional to 137,942.26, 190,365.90 and 77,512.71 is: 106,970.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,942.26 : 190,365.90 = 77,512.71 : x
  2. Step 2: Convert to fraction form
    137,942.26/190,365.90 = 77,512.71/x
  3. Step 3: Cross multiply
    137,942.26x = 190,365.90 × 77,512.71
  4. Step 4: Simplify right side
    137,942.26x = 14,755,777,223.79
  5. Step 5: Solve for x
    x = 14,755,777,223.79/137,942.26
  6. Step 6: Final answer
    x = 106,970.68

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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.