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Finding the Fourth Proportional to 143,477.12, 215,215.84 and 64,576.64

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Solution

The fourth proportional to 143,477.12, 215,215.84 and 64,576.64 is: 96,865.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,477.12 : 215,215.84 = 64,576.64 : x
  2. Step 2: Convert to fraction form
    143,477.12/215,215.84 = 64,576.64/x
  3. Step 3: Cross multiply
    143,477.12x = 215,215.84 × 64,576.64
  4. Step 4: Simplify right side
    143,477.12x = 13,897,915,821.98
  5. Step 5: Solve for x
    x = 13,897,915,821.98/143,477.12
  6. Step 6: Final answer
    x = 96,865.03

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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.