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Finding the Fourth Proportional to 99,108.79, 136,770.23 and 53,786.79

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Solution

The fourth proportional to 99,108.79, 136,770.23 and 53,786.79 is: 74,225.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,108.79 : 136,770.23 = 53,786.79 : x
  2. Step 2: Convert to fraction form
    99,108.79/136,770.23 = 53,786.79/x
  3. Step 3: Cross multiply
    99,108.79x = 136,770.23 × 53,786.79
  4. Step 4: Simplify right side
    99,108.79x = 7,356,431,773.73
  5. Step 5: Solve for x
    x = 7,356,431,773.73/99,108.79
  6. Step 6: Final answer
    x = 74,225.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.