Home / 142,374-196,469.90-81,946.58

Finding the Fourth Proportional to 142,374, 196,469.90 and 81,946.58

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Solution

The fourth proportional to 142,374, 196,469.90 and 81,946.58 is: 113,082.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,374 : 196,469.90 = 81,946.58 : x
  2. Step 2: Convert to fraction form
    142,374/196,469.90 = 81,946.58/x
  3. Step 3: Cross multiply
    142,374x = 196,469.90 × 81,946.58
  4. Step 4: Simplify right side
    142,374x = 16,100,036,377.94
  5. Step 5: Solve for x
    x = 16,100,036,377.94/142,374
  6. Step 6: Final answer
    x = 113,082.70

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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.