Home / 142,712.28-196,942.86-79,054.20

Finding the Fourth Proportional to 142,712.28, 196,942.86 and 79,054.20

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Solution

The fourth proportional to 142,712.28, 196,942.86 and 79,054.20 is: 109,094.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,712.28 : 196,942.86 = 79,054.20 : x
  2. Step 2: Convert to fraction form
    142,712.28/196,942.86 = 79,054.20/x
  3. Step 3: Cross multiply
    142,712.28x = 196,942.86 × 79,054.20
  4. Step 4: Simplify right side
    142,712.28x = 15,569,160,243.01
  5. Step 5: Solve for x
    x = 15,569,160,243.01/142,712.28
  6. Step 6: Final answer
    x = 109,094.75

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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.