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Finding the Fourth Proportional to 152,675.89, 228,921.49 and 68,420.50

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Solution

The fourth proportional to 152,675.89, 228,921.49 and 68,420.50 is: 102,589.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,675.89 : 228,921.49 = 68,420.50 : x
  2. Step 2: Convert to fraction form
    152,675.89/228,921.49 = 68,420.50/x
  3. Step 3: Cross multiply
    152,675.89x = 228,921.49 × 68,420.50
  4. Step 4: Simplify right side
    152,675.89x = 15,662,922,319.77
  5. Step 5: Solve for x
    x = 15,662,922,319.77/152,675.89
  6. Step 6: Final answer
    x = 102,589.36

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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.