Home / 99,628.38-149,403.69-43,485.66

Finding the Fourth Proportional to 99,628.38, 149,403.69 and 43,485.66

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Solution

The fourth proportional to 99,628.38, 149,403.69 and 43,485.66 is: 65,211.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,628.38 : 149,403.69 = 43,485.66 : x
  2. Step 2: Convert to fraction form
    99,628.38/149,403.69 = 43,485.66/x
  3. Step 3: Cross multiply
    99,628.38x = 149,403.69 × 43,485.66
  4. Step 4: Simplify right side
    99,628.38x = 6,496,918,066.09
  5. Step 5: Solve for x
    x = 6,496,918,066.09/99,628.38
  6. Step 6: Final answer
    x = 65,211.52

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.