Home / 142,361.13-196,441.30-78,690.27

Finding the Fourth Proportional to 142,361.13, 196,441.30 and 78,690.27

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Solution

The fourth proportional to 142,361.13, 196,441.30 and 78,690.27 is: 108,583.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,361.13 : 196,441.30 = 78,690.27 : x
  2. Step 2: Convert to fraction form
    142,361.13/196,441.30 = 78,690.27/x
  3. Step 3: Cross multiply
    142,361.13x = 196,441.30 × 78,690.27
  4. Step 4: Simplify right side
    142,361.13x = 15,458,017,757.22
  5. Step 5: Solve for x
    x = 15,458,017,757.22/142,361.13
  6. Step 6: Final answer
    x = 108,583.14

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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.