Home / 142,810.76-197,078.44-79,148.56

Finding the Fourth Proportional to 142,810.76, 197,078.44 and 79,148.56

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Solution

The fourth proportional to 142,810.76, 197,078.44 and 79,148.56 is: 109,224.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,810.76 : 197,078.44 = 79,148.56 : x
  2. Step 2: Convert to fraction form
    142,810.76/197,078.44 = 79,148.56/x
  3. Step 3: Cross multiply
    142,810.76x = 197,078.44 × 79,148.56
  4. Step 4: Simplify right side
    142,810.76x = 15,598,474,783.01
  5. Step 5: Solve for x
    x = 15,598,474,783.01/142,810.76
  6. Step 6: Final answer
    x = 109,224.78

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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.