Home / 108,515.10-149,633.86-74,063.69

Finding the Fourth Proportional to 108,515.10, 149,633.86 and 74,063.69

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Solution

The fourth proportional to 108,515.10, 149,633.86 and 74,063.69 is: 102,128.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,515.10 : 149,633.86 = 74,063.69 : x
  2. Step 2: Convert to fraction form
    108,515.10/149,633.86 = 74,063.69/x
  3. Step 3: Cross multiply
    108,515.10x = 149,633.86 × 74,063.69
  4. Step 4: Simplify right side
    108,515.10x = 11,082,436,273.20
  5. Step 5: Solve for x
    x = 11,082,436,273.20/108,515.10
  6. Step 6: Final answer
    x = 102,128.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.