Home / 133,780.60-184,519.43-85,415.78

Finding the Fourth Proportional to 133,780.60, 184,519.43 and 85,415.78

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Solution

The fourth proportional to 133,780.60, 184,519.43 and 85,415.78 is: 117,811.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,780.60 : 184,519.43 = 85,415.78 : x
  2. Step 2: Convert to fraction form
    133,780.60/184,519.43 = 85,415.78/x
  3. Step 3: Cross multiply
    133,780.60x = 184,519.43 × 85,415.78
  4. Step 4: Simplify right side
    133,780.60x = 15,760,871,393.13
  5. Step 5: Solve for x
    x = 15,760,871,393.13/133,780.60
  6. Step 6: Final answer
    x = 117,811.34

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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.