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Finding the Fourth Proportional to 133,385.64, 184,078.08 and 76,815.24

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Solution

The fourth proportional to 133,385.64, 184,078.08 and 76,815.24 is: 106,008.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,385.64 : 184,078.08 = 76,815.24 : x
  2. Step 2: Convert to fraction form
    133,385.64/184,078.08 = 76,815.24/x
  3. Step 3: Cross multiply
    133,385.64x = 184,078.08 × 76,815.24
  4. Step 4: Simplify right side
    133,385.64x = 14,140,001,893.94
  5. Step 5: Solve for x
    x = 14,140,001,893.94/133,385.64
  6. Step 6: Final answer
    x = 106,008.43

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1.5x scale

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.