Home / 139,276.18-192,201.93-81,917.93

Finding the Fourth Proportional to 139,276.18, 192,201.93 and 81,917.93

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Solution

The fourth proportional to 139,276.18, 192,201.93 and 81,917.93 is: 113,047.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,276.18 : 192,201.93 = 81,917.93 : x
  2. Step 2: Convert to fraction form
    139,276.18/192,201.93 = 81,917.93/x
  3. Step 3: Cross multiply
    139,276.18x = 192,201.93 × 81,917.93
  4. Step 4: Simplify right side
    139,276.18x = 15,744,784,247.60
  5. Step 5: Solve for x
    x = 15,744,784,247.60/139,276.18
  6. Step 6: Final answer
    x = 113,047.21

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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.