Home / 123,501.96-170,441.24-75,122.79

Finding the Fourth Proportional to 123,501.96, 170,441.24 and 75,122.79

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Solution

The fourth proportional to 123,501.96, 170,441.24 and 75,122.79 is: 103,674.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,501.96 : 170,441.24 = 75,122.79 : x
  2. Step 2: Convert to fraction form
    123,501.96/170,441.24 = 75,122.79/x
  3. Step 3: Cross multiply
    123,501.96x = 170,441.24 × 75,122.79
  4. Step 4: Simplify right side
    123,501.96x = 12,804,021,104.25
  5. Step 5: Solve for x
    x = 12,804,021,104.25/123,501.96
  6. Step 6: Final answer
    x = 103,674.64

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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.