Home / 142,809.21-197,076.66-79,151.10

Finding the Fourth Proportional to 142,809.21, 197,076.66 and 79,151.10

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Solution

The fourth proportional to 142,809.21, 197,076.66 and 79,151.10 is: 109,228.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,809.21 : 197,076.66 = 79,151.10 : x
  2. Step 2: Convert to fraction form
    142,809.21/197,076.66 = 79,151.10/x
  3. Step 3: Cross multiply
    142,809.21x = 197,076.66 × 79,151.10
  4. Step 4: Simplify right side
    142,809.21x = 15,598,834,423.33
  5. Step 5: Solve for x
    x = 15,598,834,423.33/142,809.21
  6. Step 6: Final answer
    x = 109,228.49

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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.