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Finding the Fourth Proportional to 190,419.49, 285,800.55 and 101,748.79

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Solution

The fourth proportional to 190,419.49, 285,800.55 and 101,748.79 is: 152,714.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,419.49 : 285,800.55 = 101,748.79 : x
  2. Step 2: Convert to fraction form
    190,419.49/285,800.55 = 101,748.79/x
  3. Step 3: Cross multiply
    190,419.49x = 285,800.55 × 101,748.79
  4. Step 4: Simplify right side
    190,419.49x = 29,079,860,143.83
  5. Step 5: Solve for x
    x = 29,079,860,143.83/190,419.49
  6. Step 6: Final answer
    x = 152,714.73

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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.