Home / 99,211.30-136,912.62-53,890.16

Finding the Fourth Proportional to 99,211.30, 136,912.62 and 53,890.16

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Solution

The fourth proportional to 99,211.30, 136,912.62 and 53,890.16 is: 74,368.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,211.30 : 136,912.62 = 53,890.16 : x
  2. Step 2: Convert to fraction form
    99,211.30/136,912.62 = 53,890.16/x
  3. Step 3: Cross multiply
    99,211.30x = 136,912.62 × 53,890.16
  4. Step 4: Simplify right side
    99,211.30x = 7,378,242,997.82
  5. Step 5: Solve for x
    x = 7,378,242,997.82/99,211.30
  6. Step 6: Final answer
    x = 74,368.98

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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.