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Finding the Fourth Proportional to 104,369.79, 156,770.30 and 99,821.51

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Solution

The fourth proportional to 104,369.79, 156,770.30 and 99,821.51 is: 149,938.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,369.79 : 156,770.30 = 99,821.51 : x
  2. Step 2: Convert to fraction form
    104,369.79/156,770.30 = 99,821.51/x
  3. Step 3: Cross multiply
    104,369.79x = 156,770.30 × 99,821.51
  4. Step 4: Simplify right side
    104,369.79x = 15,649,048,710.63
  5. Step 5: Solve for x
    x = 15,649,048,710.63/104,369.79
  6. Step 6: Final answer
    x = 149,938.49

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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.