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Finding the Fourth Proportional to 143,671.70, 198,268.89 and 80,011.10

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Solution

The fourth proportional to 143,671.70, 198,268.89 and 80,011.10 is: 110,416.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,671.70 : 198,268.89 = 80,011.10 : x
  2. Step 2: Convert to fraction form
    143,671.70/198,268.89 = 80,011.10/x
  3. Step 3: Cross multiply
    143,671.70x = 198,268.89 × 80,011.10
  4. Step 4: Simplify right side
    143,671.70x = 15,863,711,984.68
  5. Step 5: Solve for x
    x = 15,863,711,984.68/143,671.70
  6. Step 6: Final answer
    x = 110,416.40

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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.