Home / 142,633.92-196,820.28-78,954.96

Finding the Fourth Proportional to 142,633.92, 196,820.28 and 78,954.96

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Solution

The fourth proportional to 142,633.92, 196,820.28 and 78,954.96 is: 108,949.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,633.92 : 196,820.28 = 78,954.96 : x
  2. Step 2: Convert to fraction form
    142,633.92/196,820.28 = 78,954.96/x
  3. Step 3: Cross multiply
    142,633.92x = 196,820.28 × 78,954.96
  4. Step 4: Simplify right side
    142,633.92x = 15,539,937,334.59
  5. Step 5: Solve for x
    x = 15,539,937,334.59/142,633.92
  6. Step 6: Final answer
    x = 108,949.80

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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.