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Finding the Fourth Proportional to 108,998.78, 150,416.96 and 61,260.21

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Solution

The fourth proportional to 108,998.78, 150,416.96 and 61,260.21 is: 84,538.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,998.78 : 150,416.96 = 61,260.21 : x
  2. Step 2: Convert to fraction form
    108,998.78/150,416.96 = 61,260.21/x
  3. Step 3: Cross multiply
    108,998.78x = 150,416.96 × 61,260.21
  4. Step 4: Simplify right side
    108,998.78x = 9,214,574,250.86
  5. Step 5: Solve for x
    x = 9,214,574,250.86/108,998.78
  6. Step 6: Final answer
    x = 84,538.33

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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.