Home / 133,131.60-199,438.20-80,384.40

Finding the Fourth Proportional to 133,131.60, 199,438.20 and 80,384.40

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Solution

The fourth proportional to 133,131.60, 199,438.20 and 80,384.40 is: 120,420.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,131.60 : 199,438.20 = 80,384.40 : x
  2. Step 2: Convert to fraction form
    133,131.60/199,438.20 = 80,384.40/x
  3. Step 3: Cross multiply
    133,131.60x = 199,438.20 × 80,384.40
  4. Step 4: Simplify right side
    133,131.60x = 16,031,720,044.08
  5. Step 5: Solve for x
    x = 16,031,720,044.08/133,131.60
  6. Step 6: Final answer
    x = 120,420.10

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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.