Home / 142,963.38-197,313.12-79,321.68

Finding the Fourth Proportional to 142,963.38, 197,313.12 and 79,321.68

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Solution

The fourth proportional to 142,963.38, 197,313.12 and 79,321.68 is: 109,477.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,963.38 : 197,313.12 = 79,321.68 : x
  2. Step 2: Convert to fraction form
    142,963.38/197,313.12 = 79,321.68/x
  3. Step 3: Cross multiply
    142,963.38x = 197,313.12 × 79,321.68
  4. Step 4: Simplify right side
    142,963.38x = 15,651,208,164.44
  5. Step 5: Solve for x
    x = 15,651,208,164.44/142,963.38
  6. Step 6: Final answer
    x = 109,477.04

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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.