Home / 142,493.28-196,632.96-78,820.80

Finding the Fourth Proportional to 142,493.28, 196,632.96 and 78,820.80

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Solution

The fourth proportional to 142,493.28, 196,632.96 and 78,820.80 is: 108,768.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,493.28 : 196,632.96 = 78,820.80 : x
  2. Step 2: Convert to fraction form
    142,493.28/196,632.96 = 78,820.80/x
  3. Step 3: Cross multiply
    142,493.28x = 196,632.96 × 78,820.80
  4. Step 4: Simplify right side
    142,493.28x = 15,498,767,213.57
  5. Step 5: Solve for x
    x = 15,498,767,213.57/142,493.28
  6. Step 6: Final answer
    x = 108,768.41

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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.