Home / 142,019.56-196,080.42-109,695.40

Finding the Fourth Proportional to 142,019.56, 196,080.42 and 109,695.40

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Solution

The fourth proportional to 142,019.56, 196,080.42 and 109,695.40 is: 151,451.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,019.56 : 196,080.42 = 109,695.40 : x
  2. Step 2: Convert to fraction form
    142,019.56/196,080.42 = 109,695.40/x
  3. Step 3: Cross multiply
    142,019.56x = 196,080.42 × 109,695.40
  4. Step 4: Simplify right side
    142,019.56x = 21,509,120,104.07
  5. Step 5: Solve for x
    x = 21,509,120,104.07/142,019.56
  6. Step 6: Final answer
    x = 151,451.81

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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.