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Finding the Fourth Proportional to 99,848, 137,790.36 and 55,136

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Solution

The fourth proportional to 99,848, 137,790.36 and 55,136 is: 76,087.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,848 : 137,790.36 = 55,136 : x
  2. Step 2: Convert to fraction form
    99,848/137,790.36 = 55,136/x
  3. Step 3: Cross multiply
    99,848x = 137,790.36 × 55,136
  4. Step 4: Simplify right side
    99,848x = 7,597,209,288.96
  5. Step 5: Solve for x
    x = 7,597,209,288.96/99,848
  6. Step 6: Final answer
    x = 76,087.75

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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.