Home / 142,783.67-197,040.94-79,121.42

Finding the Fourth Proportional to 142,783.67, 197,040.94 and 79,121.42

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Solution

The fourth proportional to 142,783.67, 197,040.94 and 79,121.42 is: 109,187.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,783.67 : 197,040.94 = 79,121.42 : x
  2. Step 2: Convert to fraction form
    142,783.67/197,040.94 = 79,121.42/x
  3. Step 3: Cross multiply
    142,783.67x = 197,040.94 × 79,121.42
  4. Step 4: Simplify right side
    142,783.67x = 15,590,159,265.73
  5. Step 5: Solve for x
    x = 15,590,159,265.73/142,783.67
  6. Step 6: Final answer
    x = 109,187.27

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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.