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Finding the Fourth Proportional to 133,978.93, 184,905.65 and 76,623.60

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Solution

The fourth proportional to 133,978.93, 184,905.65 and 76,623.60 is: 105,749.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,978.93 : 184,905.65 = 76,623.60 : x
  2. Step 2: Convert to fraction form
    133,978.93/184,905.65 = 76,623.60/x
  3. Step 3: Cross multiply
    133,978.93x = 184,905.65 × 76,623.60
  4. Step 4: Simplify right side
    133,978.93x = 14,168,137,448.30
  5. Step 5: Solve for x
    x = 14,168,137,448.30/133,978.93
  6. Step 6: Final answer
    x = 105,749.00

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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.