Home / 133,022.40-199,543.20-80,318.40

Finding the Fourth Proportional to 133,022.40, 199,543.20 and 80,318.40

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Solution

The fourth proportional to 133,022.40, 199,543.20 and 80,318.40 is: 120,483.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,022.40 : 199,543.20 = 80,318.40 : x
  2. Step 2: Convert to fraction form
    133,022.40/199,543.20 = 80,318.40/x
  3. Step 3: Cross multiply
    133,022.40x = 199,543.20 × 80,318.40
  4. Step 4: Simplify right side
    133,022.40x = 16,026,990,554.88
  5. Step 5: Solve for x
    x = 16,026,990,554.88/133,022.40
  6. Step 6: Final answer
    x = 120,483.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.