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Finding the Fourth Proportional to 73,240.80, 109,861.20 and 60,118.80

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Solution

The fourth proportional to 73,240.80, 109,861.20 and 60,118.80 is: 90,178.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,240.80 : 109,861.20 = 60,118.80 : x
  2. Step 2: Convert to fraction form
    73,240.80/109,861.20 = 60,118.80/x
  3. Step 3: Cross multiply
    73,240.80x = 109,861.20 × 60,118.80
  4. Step 4: Simplify right side
    73,240.80x = 6,604,723,510.56
  5. Step 5: Solve for x
    x = 6,604,723,510.56/73,240.80
  6. Step 6: Final answer
    x = 90,178.20

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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.