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Finding the Fourth Proportional to 103,638.55, 155,457.83 and 37,080.85

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Solution

The fourth proportional to 103,638.55, 155,457.83 and 37,080.85 is: 55,621.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,638.55 : 155,457.83 = 37,080.85 : x
  2. Step 2: Convert to fraction form
    103,638.55/155,457.83 = 37,080.85/x
  3. Step 3: Cross multiply
    103,638.55x = 155,457.83 × 37,080.85
  4. Step 4: Simplify right side
    103,638.55x = 5,764,508,475.56
  5. Step 5: Solve for x
    x = 5,764,508,475.56/103,638.55
  6. Step 6: Final answer
    x = 55,621.28

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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.