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Finding the Fourth Proportional to 133,173.45, 183,731.54 and 78,714.14

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Solution

The fourth proportional to 133,173.45, 183,731.54 and 78,714.14 is: 108,597.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,173.45 : 183,731.54 = 78,714.14 : x
  2. Step 2: Convert to fraction form
    133,173.45/183,731.54 = 78,714.14/x
  3. Step 3: Cross multiply
    133,173.45x = 183,731.54 × 78,714.14
  4. Step 4: Simplify right side
    133,173.45x = 14,462,268,849.75
  5. Step 5: Solve for x
    x = 14,462,268,849.75/133,173.45
  6. Step 6: Final answer
    x = 108,597.24

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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.