Home / 142,905.06-197,208.27-79,253.64

Finding the Fourth Proportional to 142,905.06, 197,208.27 and 79,253.64

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Solution

The fourth proportional to 142,905.06, 197,208.27 and 79,253.64 is: 109,369.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,905.06 : 197,208.27 = 79,253.64 : x
  2. Step 2: Convert to fraction form
    142,905.06/197,208.27 = 79,253.64/x
  3. Step 3: Cross multiply
    142,905.06x = 197,208.27 × 79,253.64
  4. Step 4: Simplify right side
    142,905.06x = 15,629,473,235.60
  5. Step 5: Solve for x
    x = 15,629,473,235.60/142,905.06
  6. Step 6: Final answer
    x = 109,369.63

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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.