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Finding the Fourth Proportional to 133,435.50, 184,122.80 and 79,709.12

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Solution

The fourth proportional to 133,435.50, 184,122.80 and 79,709.12 is: 109,987.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,435.50 : 184,122.80 = 79,709.12 : x
  2. Step 2: Convert to fraction form
    133,435.50/184,122.80 = 79,709.12/x
  3. Step 3: Cross multiply
    133,435.50x = 184,122.80 × 79,709.12
  4. Step 4: Simplify right side
    133,435.50x = 14,676,265,638.59
  5. Step 5: Solve for x
    x = 14,676,265,638.59/133,435.50
  6. Step 6: Final answer
    x = 109,987.71

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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.