Home / 108,165.12-149,249.76-99,455.28

Finding the Fourth Proportional to 108,165.12, 149,249.76 and 99,455.28

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Solution

The fourth proportional to 108,165.12, 149,249.76 and 99,455.28 is: 137,231.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,165.12 : 149,249.76 = 99,455.28 : x
  2. Step 2: Convert to fraction form
    108,165.12/149,249.76 = 99,455.28/x
  3. Step 3: Cross multiply
    108,165.12x = 149,249.76 × 99,455.28
  4. Step 4: Simplify right side
    108,165.12x = 14,843,676,670.73
  5. Step 5: Solve for x
    x = 14,843,676,670.73/108,165.12
  6. Step 6: Final answer
    x = 137,231.64

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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.