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Finding the Fourth Proportional to 143,812.26, 215,479.98 and 87,482.03

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Solution

The fourth proportional to 143,812.26, 215,479.98 and 87,482.03 is: 131,078.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,812.26 : 215,479.98 = 87,482.03 : x
  2. Step 2: Convert to fraction form
    143,812.26/215,479.98 = 87,482.03/x
  3. Step 3: Cross multiply
    143,812.26x = 215,479.98 × 87,482.03
  4. Step 4: Simplify right side
    143,812.26x = 18,850,624,997.36
  5. Step 5: Solve for x
    x = 18,850,624,997.36/143,812.26
  6. Step 6: Final answer
    x = 131,078.01

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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.