Home / 139,832.47-192,968.79-76,170.25

Finding the Fourth Proportional to 139,832.47, 192,968.79 and 76,170.25

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Solution

The fourth proportional to 139,832.47, 192,968.79 and 76,170.25 is: 105,114.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,832.47 : 192,968.79 = 76,170.25 : x
  2. Step 2: Convert to fraction form
    139,832.47/192,968.79 = 76,170.25/x
  3. Step 3: Cross multiply
    139,832.47x = 192,968.79 × 76,170.25
  4. Step 4: Simplify right side
    139,832.47x = 14,698,480,976.50
  5. Step 5: Solve for x
    x = 14,698,480,976.50/139,832.47
  6. Step 6: Final answer
    x = 105,114.93

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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.