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Finding the Fourth Proportional to 80,165.88, 120,133.80 and 45,031.59

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Solution

The fourth proportional to 80,165.88, 120,133.80 and 45,031.59 is: 67,482.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,165.88 : 120,133.80 = 45,031.59 : x
  2. Step 2: Convert to fraction form
    80,165.88/120,133.80 = 45,031.59/x
  3. Step 3: Cross multiply
    80,165.88x = 120,133.80 × 45,031.59
  4. Step 4: Simplify right side
    80,165.88x = 5,409,816,026.74
  5. Step 5: Solve for x
    x = 5,409,816,026.74/80,165.88
  6. Step 6: Final answer
    x = 67,482.77

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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.