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Finding the Fourth Proportional to 99,369.93, 148,999.55 and 51,866.13

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Solution

The fourth proportional to 99,369.93, 148,999.55 and 51,866.13 is: 77,770.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,369.93 : 148,999.55 = 51,866.13 : x
  2. Step 2: Convert to fraction form
    99,369.93/148,999.55 = 51,866.13/x
  3. Step 3: Cross multiply
    99,369.93x = 148,999.55 × 51,866.13
  4. Step 4: Simplify right side
    99,369.93x = 7,728,029,770.91
  5. Step 5: Solve for x
    x = 7,728,029,770.91/99,369.93
  6. Step 6: Final answer
    x = 77,770.31

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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.