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Finding the Fourth Proportional to 99,259.44, 136,978.20 and 53,937

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Solution

The fourth proportional to 99,259.44, 136,978.20 and 53,937 is: 74,433.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,259.44 : 136,978.20 = 53,937 : x
  2. Step 2: Convert to fraction form
    99,259.44/136,978.20 = 53,937/x
  3. Step 3: Cross multiply
    99,259.44x = 136,978.20 × 53,937
  4. Step 4: Simplify right side
    99,259.44x = 7,388,193,173.40
  5. Step 5: Solve for x
    x = 7,388,193,173.40/99,259.44
  6. Step 6: Final answer
    x = 74,433.15

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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.