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Finding the Fourth Proportional to 115,164.63, 171,846.08 and 103,196.45

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Solution

The fourth proportional to 115,164.63, 171,846.08 and 103,196.45 is: 153,987.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,164.63 : 171,846.08 = 103,196.45 : x
  2. Step 2: Convert to fraction form
    115,164.63/171,846.08 = 103,196.45/x
  3. Step 3: Cross multiply
    115,164.63x = 171,846.08 × 103,196.45
  4. Step 4: Simplify right side
    115,164.63x = 17,733,904,027.20
  5. Step 5: Solve for x
    x = 17,733,904,027.20/115,164.63
  6. Step 6: Final answer
    x = 153,987.42

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.