Home / 142,327.77-196,422.51-78,664.20

Finding the Fourth Proportional to 142,327.77, 196,422.51 and 78,664.20

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Solution

The fourth proportional to 142,327.77, 196,422.51 and 78,664.20 is: 108,562.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,327.77 : 196,422.51 = 78,664.20 : x
  2. Step 2: Convert to fraction form
    142,327.77/196,422.51 = 78,664.20/x
  3. Step 3: Cross multiply
    142,327.77x = 196,422.51 × 78,664.20
  4. Step 4: Simplify right side
    142,327.77x = 15,451,419,611.14
  5. Step 5: Solve for x
    x = 15,451,419,611.14/142,327.77
  6. Step 6: Final answer
    x = 108,562.23

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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.