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Finding the Fourth Proportional to 170,270.88, 255,405.84 and 76,667.04

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Solution

The fourth proportional to 170,270.88, 255,405.84 and 76,667.04 is: 115,000.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,270.88 : 255,405.84 = 76,667.04 : x
  2. Step 2: Convert to fraction form
    170,270.88/255,405.84 = 76,667.04/x
  3. Step 3: Cross multiply
    170,270.88x = 255,405.84 × 76,667.04
  4. Step 4: Simplify right side
    170,270.88x = 19,581,209,751.51
  5. Step 5: Solve for x
    x = 19,581,209,751.51/170,270.88
  6. Step 6: Final answer
    x = 115,000.34

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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.