Home / 142,380.27-196,487.24-78,718.32

Finding the Fourth Proportional to 142,380.27, 196,487.24 and 78,718.32

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Solution

The fourth proportional to 142,380.27, 196,487.24 and 78,718.32 is: 108,632.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,380.27 : 196,487.24 = 78,718.32 : x
  2. Step 2: Convert to fraction form
    142,380.27/196,487.24 = 78,718.32/x
  3. Step 3: Cross multiply
    142,380.27x = 196,487.24 × 78,718.32
  4. Step 4: Simplify right side
    142,380.27x = 15,467,145,040.65
  5. Step 5: Solve for x
    x = 15,467,145,040.65/142,380.27
  6. Step 6: Final answer
    x = 108,632.64

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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.