Home / 142,951.78-197,297.07-79,310.08

Finding the Fourth Proportional to 142,951.78, 197,297.07 and 79,310.08

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Solution

The fourth proportional to 142,951.78, 197,297.07 and 79,310.08 is: 109,461.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,951.78 : 197,297.07 = 79,310.08 : x
  2. Step 2: Convert to fraction form
    142,951.78/197,297.07 = 79,310.08/x
  3. Step 3: Cross multiply
    142,951.78x = 197,297.07 × 79,310.08
  4. Step 4: Simplify right side
    142,951.78x = 15,647,646,405.47
  5. Step 5: Solve for x
    x = 15,647,646,405.47/142,951.78
  6. Step 6: Final answer
    x = 109,461.01

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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.