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Finding the Fourth Proportional to 108,940.80, 150,343.68 and 61,191.68

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Solution

The fourth proportional to 108,940.80, 150,343.68 and 61,191.68 is: 84,447.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,940.80 : 150,343.68 = 61,191.68 : x
  2. Step 2: Convert to fraction form
    108,940.80/150,343.68 = 61,191.68/x
  3. Step 3: Cross multiply
    108,940.80x = 150,343.68 × 61,191.68
  4. Step 4: Simplify right side
    108,940.80x = 9,199,782,356.58
  5. Step 5: Solve for x
    x = 9,199,782,356.58/108,940.80
  6. Step 6: Final answer
    x = 84,447.54

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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.