Home / 142,601.46-196,791.57-78,940.32

Finding the Fourth Proportional to 142,601.46, 196,791.57 and 78,940.32

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Solution

The fourth proportional to 142,601.46, 196,791.57 and 78,940.32 is: 108,938.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,601.46 : 196,791.57 = 78,940.32 : x
  2. Step 2: Convert to fraction form
    142,601.46/196,791.57 = 78,940.32/x
  3. Step 3: Cross multiply
    142,601.46x = 196,791.57 × 78,940.32
  4. Step 4: Simplify right side
    142,601.46x = 15,534,789,509.10
  5. Step 5: Solve for x
    x = 15,534,789,509.10/142,601.46
  6. Step 6: Final answer
    x = 108,938.50

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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.