Home / 137,942.18-190,365.84-77,512.64

Finding the Fourth Proportional to 137,942.18, 190,365.84 and 77,512.64

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Solution

The fourth proportional to 137,942.18, 190,365.84 and 77,512.64 is: 106,970.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,942.18 : 190,365.84 = 77,512.64 : x
  2. Step 2: Convert to fraction form
    137,942.18/190,365.84 = 77,512.64/x
  3. Step 3: Cross multiply
    137,942.18x = 190,365.84 × 77,512.64
  4. Step 4: Simplify right side
    137,942.18x = 14,755,758,824.22
  5. Step 5: Solve for x
    x = 14,755,758,824.22/137,942.18
  6. Step 6: Final answer
    x = 106,970.61

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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.