Home / 139,380.48-192,344.12-75,717.72

Finding the Fourth Proportional to 139,380.48, 192,344.12 and 75,717.72

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Solution

The fourth proportional to 139,380.48, 192,344.12 and 75,717.72 is: 104,489.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,380.48 : 192,344.12 = 75,717.72 : x
  2. Step 2: Convert to fraction form
    139,380.48/192,344.12 = 75,717.72/x
  3. Step 3: Cross multiply
    139,380.48x = 192,344.12 × 75,717.72
  4. Step 4: Simplify right side
    139,380.48x = 14,563,858,127.16
  5. Step 5: Solve for x
    x = 14,563,858,127.16/139,380.48
  6. Step 6: Final answer
    x = 104,489.94

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1.5x scale

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.