Home / 143,001.09-214,558.13-54,278.15

Finding the Fourth Proportional to 143,001.09, 214,558.13 and 54,278.15

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Solution

The fourth proportional to 143,001.09, 214,558.13 and 54,278.15 is: 81,438.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,001.09 : 214,558.13 = 54,278.15 : x
  2. Step 2: Convert to fraction form
    143,001.09/214,558.13 = 54,278.15/x
  3. Step 3: Cross multiply
    143,001.09x = 214,558.13 × 54,278.15
  4. Step 4: Simplify right side
    143,001.09x = 11,645,817,426.76
  5. Step 5: Solve for x
    x = 11,645,817,426.76/143,001.09
  6. Step 6: Final answer
    x = 81,438.66

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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.