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Finding the Fourth Proportional to 108,137.89, 149,208.65 and 60,383.89

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Solution

The fourth proportional to 108,137.89, 149,208.65 and 60,383.89 is: 83,317.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,137.89 : 149,208.65 = 60,383.89 : x
  2. Step 2: Convert to fraction form
    108,137.89/149,208.65 = 60,383.89/x
  3. Step 3: Cross multiply
    108,137.89x = 149,208.65 × 60,383.89
  4. Step 4: Simplify right side
    108,137.89x = 9,009,798,406.73
  5. Step 5: Solve for x
    x = 9,009,798,406.73/108,137.89
  6. Step 6: Final answer
    x = 83,317.68

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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.