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Finding the Fourth Proportional to 171,814.43, 257,722.50 and 70,667.65

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Solution

The fourth proportional to 171,814.43, 257,722.50 and 70,667.65 is: 106,001.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,814.43 : 257,722.50 = 70,667.65 : x
  2. Step 2: Convert to fraction form
    171,814.43/257,722.50 = 70,667.65/x
  3. Step 3: Cross multiply
    171,814.43x = 257,722.50 × 70,667.65
  4. Step 4: Simplify right side
    171,814.43x = 18,212,642,564.59
  5. Step 5: Solve for x
    x = 18,212,642,564.59/171,814.43
  6. Step 6: Final answer
    x = 106,001.82

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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.