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Finding the Fourth Proportional to 108,900.50, 149,816.13 and 104,234.90

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Solution

The fourth proportional to 108,900.50, 149,816.13 and 104,234.90 is: 143,397.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,900.50 : 149,816.13 = 104,234.90 : x
  2. Step 2: Convert to fraction form
    108,900.50/149,816.13 = 104,234.90/x
  3. Step 3: Cross multiply
    108,900.50x = 149,816.13 × 104,234.90
  4. Step 4: Simplify right side
    108,900.50x = 15,616,069,328.94
  5. Step 5: Solve for x
    x = 15,616,069,328.94/108,900.50
  6. Step 6: Final answer
    x = 143,397.59

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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.