Home / 142,389.34-196,506.09-81,958.66

Finding the Fourth Proportional to 142,389.34, 196,506.09 and 81,958.66

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Solution

The fourth proportional to 142,389.34, 196,506.09 and 81,958.66 is: 113,108.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,389.34 : 196,506.09 = 81,958.66 : x
  2. Step 2: Convert to fraction form
    142,389.34/196,506.09 = 81,958.66/x
  3. Step 3: Cross multiply
    142,389.34x = 196,506.09 × 81,958.66
  4. Step 4: Simplify right side
    142,389.34x = 16,105,375,818.24
  5. Step 5: Solve for x
    x = 16,105,375,818.24/142,389.34
  6. Step 6: Final answer
    x = 113,108.02

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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.