Home / 124,791.89-172,212.81-80,157.65

Finding the Fourth Proportional to 124,791.89, 172,212.81 and 80,157.65

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Solution

The fourth proportional to 124,791.89, 172,212.81 and 80,157.65 is: 110,617.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,791.89 : 172,212.81 = 80,157.65 : x
  2. Step 2: Convert to fraction form
    124,791.89/172,212.81 = 80,157.65/x
  3. Step 3: Cross multiply
    124,791.89x = 172,212.81 × 80,157.65
  4. Step 4: Simplify right side
    124,791.89x = 13,804,174,181.98
  5. Step 5: Solve for x
    x = 13,804,174,181.98/124,791.89
  6. Step 6: Final answer
    x = 110,617.56

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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.