Home / 142,948.90-197,255.46-79,285.42

Finding the Fourth Proportional to 142,948.90, 197,255.46 and 79,285.42

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Solution

The fourth proportional to 142,948.90, 197,255.46 and 79,285.42 is: 109,406.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,948.90 : 197,255.46 = 79,285.42 : x
  2. Step 2: Convert to fraction form
    142,948.90/197,255.46 = 79,285.42/x
  3. Step 3: Cross multiply
    142,948.90x = 197,255.46 × 79,285.42
  4. Step 4: Simplify right side
    142,948.90x = 15,639,481,993.39
  5. Step 5: Solve for x
    x = 15,639,481,993.39/142,948.90
  6. Step 6: Final answer
    x = 109,406.10

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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.