Home / 142,812.80-197,106.06-82,372.64

Finding the Fourth Proportional to 142,812.80, 197,106.06 and 82,372.64

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Solution

The fourth proportional to 142,812.80, 197,106.06 and 82,372.64 is: 113,688.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,812.80 : 197,106.06 = 82,372.64 : x
  2. Step 2: Convert to fraction form
    142,812.80/197,106.06 = 82,372.64/x
  3. Step 3: Cross multiply
    142,812.80x = 197,106.06 × 82,372.64
  4. Step 4: Simplify right side
    142,812.80x = 16,236,146,522.20
  5. Step 5: Solve for x
    x = 16,236,146,522.20/142,812.80
  6. Step 6: Final answer
    x = 113,688.31

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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.