Home / 143,479.09-215,210.31-54,741.55

Finding the Fourth Proportional to 143,479.09, 215,210.31 and 54,741.55

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Solution

The fourth proportional to 143,479.09, 215,210.31 and 54,741.55 is: 82,109.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,479.09 : 215,210.31 = 54,741.55 : x
  2. Step 2: Convert to fraction form
    143,479.09/215,210.31 = 54,741.55/x
  3. Step 3: Cross multiply
    143,479.09x = 215,210.31 × 54,741.55
  4. Step 4: Simplify right side
    143,479.09x = 11,780,945,945.38
  5. Step 5: Solve for x
    x = 11,780,945,945.38/143,479.09
  6. Step 6: Final answer
    x = 82,109.15

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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.