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Finding the Fourth Proportional to 161,913.76, 242,850.48 and 68,407.36

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Solution

The fourth proportional to 161,913.76, 242,850.48 and 68,407.36 is: 102,602.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,913.76 : 242,850.48 = 68,407.36 : x
  2. Step 2: Convert to fraction form
    161,913.76/242,850.48 = 68,407.36/x
  3. Step 3: Cross multiply
    161,913.76x = 242,850.48 × 68,407.36
  4. Step 4: Simplify right side
    161,913.76x = 16,612,760,211.53
  5. Step 5: Solve for x
    x = 16,612,760,211.53/161,913.76
  6. Step 6: Final answer
    x = 102,602.52

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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.