Home / 142,311.70-196,408.92-137,638.36

Finding the Fourth Proportional to 142,311.70, 196,408.92 and 137,638.36

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Solution

The fourth proportional to 142,311.70, 196,408.92 and 137,638.36 is: 189,959.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,311.70 : 196,408.92 = 137,638.36 : x
  2. Step 2: Convert to fraction form
    142,311.70/196,408.92 = 137,638.36/x
  3. Step 3: Cross multiply
    142,311.70x = 196,408.92 × 137,638.36
  4. Step 4: Simplify right side
    142,311.70x = 27,033,401,638.17
  5. Step 5: Solve for x
    x = 27,033,401,638.17/142,311.70
  6. Step 6: Final answer
    x = 189,959.09

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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.