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Finding the Fourth Proportional to 143,677.80, 215,516.01 and 43,837.65

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Solution

The fourth proportional to 143,677.80, 215,516.01 and 43,837.65 is: 65,756.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,677.80 : 215,516.01 = 43,837.65 : x
  2. Step 2: Convert to fraction form
    143,677.80/215,516.01 = 43,837.65/x
  3. Step 3: Cross multiply
    143,677.80x = 215,516.01 × 43,837.65
  4. Step 4: Simplify right side
    143,677.80x = 9,447,715,415.78
  5. Step 5: Solve for x
    x = 9,447,715,415.78/143,677.80
  6. Step 6: Final answer
    x = 65,756.26

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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.