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Finding the Fourth Proportional to 198,127.89, 297,181.49 and 64,990.62

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Solution

The fourth proportional to 198,127.89, 297,181.49 and 64,990.62 is: 97,482.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,127.89 : 297,181.49 = 64,990.62 : x
  2. Step 2: Convert to fraction form
    198,127.89/297,181.49 = 64,990.62/x
  3. Step 3: Cross multiply
    198,127.89x = 297,181.49 × 64,990.62
  4. Step 4: Simplify right side
    198,127.89x = 19,314,008,962.67
  5. Step 5: Solve for x
    x = 19,314,008,962.67/198,127.89
  6. Step 6: Final answer
    x = 97,482.53

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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.