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Finding the Fourth Proportional to 143,580.84, 215,371.74 and 69,657

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Solution

The fourth proportional to 143,580.84, 215,371.74 and 69,657 is: 104,485.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,580.84 : 215,371.74 = 69,657 : x
  2. Step 2: Convert to fraction form
    143,580.84/215,371.74 = 69,657/x
  3. Step 3: Cross multiply
    143,580.84x = 215,371.74 × 69,657
  4. Step 4: Simplify right side
    143,580.84x = 15,002,149,293.18
  5. Step 5: Solve for x
    x = 15,002,149,293.18/143,580.84
  6. Step 6: Final answer
    x = 104,485.73

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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.