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Finding the Fourth Proportional to 143,580.88, 215,359 and 87,406.41

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Solution

The fourth proportional to 143,580.88, 215,359 and 87,406.41 is: 131,102.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,580.88 : 215,359 = 87,406.41 : x
  2. Step 2: Convert to fraction form
    143,580.88/215,359 = 87,406.41/x
  3. Step 3: Cross multiply
    143,580.88x = 215,359 × 87,406.41
  4. Step 4: Simplify right side
    143,580.88x = 18,823,757,051.19
  5. Step 5: Solve for x
    x = 18,823,757,051.19/143,580.88
  6. Step 6: Final answer
    x = 131,102.12

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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.