Home / 139,832.71-192,968.15-76,170.50

Finding the Fourth Proportional to 139,832.71, 192,968.15 and 76,170.50

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Solution

The fourth proportional to 139,832.71, 192,968.15 and 76,170.50 is: 105,114.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,832.71 : 192,968.15 = 76,170.50 : x
  2. Step 2: Convert to fraction form
    139,832.71/192,968.15 = 76,170.50/x
  3. Step 3: Cross multiply
    139,832.71x = 192,968.15 × 76,170.50
  4. Step 4: Simplify right side
    139,832.71x = 14,698,480,469.58
  5. Step 5: Solve for x
    x = 14,698,480,469.58/139,832.71
  6. Step 6: Final answer
    x = 105,114.75

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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.