Home / 139,294.28-192,224.14-78,863.36

Finding the Fourth Proportional to 139,294.28, 192,224.14 and 78,863.36

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Solution

The fourth proportional to 139,294.28, 192,224.14 and 78,863.36 is: 108,830.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,294.28 : 192,224.14 = 78,863.36 : x
  2. Step 2: Convert to fraction form
    139,294.28/192,224.14 = 78,863.36/x
  3. Step 3: Cross multiply
    139,294.28x = 192,224.14 × 78,863.36
  4. Step 4: Simplify right side
    139,294.28x = 15,159,440,395.23
  5. Step 5: Solve for x
    x = 15,159,440,395.23/139,294.28
  6. Step 6: Final answer
    x = 108,830.31

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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.