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Finding the Fourth Proportional to 143,382.77, 215,074.51 and 43,543.73

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Solution

The fourth proportional to 143,382.77, 215,074.51 and 43,543.73 is: 65,315.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,382.77 : 215,074.51 = 43,543.73 : x
  2. Step 2: Convert to fraction form
    143,382.77/215,074.51 = 43,543.73/x
  3. Step 3: Cross multiply
    143,382.77x = 215,074.51 × 43,543.73
  4. Step 4: Simplify right side
    143,382.77x = 9,365,145,209.09
  5. Step 5: Solve for x
    x = 9,365,145,209.09/143,382.77
  6. Step 6: Final answer
    x = 65,315.69

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1.5x scale

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.