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Finding the Fourth Proportional to 167,390.08, 250,871.64 and 78,447.40

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Solution

The fourth proportional to 167,390.08, 250,871.64 and 78,447.40 is: 117,571.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    167,390.08 : 250,871.64 = 78,447.40 : x
  2. Step 2: Convert to fraction form
    167,390.08/250,871.64 = 78,447.40/x
  3. Step 3: Cross multiply
    167,390.08x = 250,871.64 × 78,447.40
  4. Step 4: Simplify right side
    167,390.08x = 19,680,227,891.74
  5. Step 5: Solve for x
    x = 19,680,227,891.74/167,390.08
  6. Step 6: Final answer
    x = 117,571.05

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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.