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Finding the Fourth Proportional to 133,041.40, 199,571.70 and 80,337.40

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Solution

The fourth proportional to 133,041.40, 199,571.70 and 80,337.40 is: 120,511.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,041.40 : 199,571.70 = 80,337.40 : x
  2. Step 2: Convert to fraction form
    133,041.40/199,571.70 = 80,337.40/x
  3. Step 3: Cross multiply
    133,041.40x = 199,571.70 × 80,337.40
  4. Step 4: Simplify right side
    133,041.40x = 16,033,071,491.58
  5. Step 5: Solve for x
    x = 16,033,071,491.58/133,041.40
  6. Step 6: Final answer
    x = 120,511.90

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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.