Home / 117,189.30-161,676.60-86,635.76

Finding the Fourth Proportional to 117,189.30, 161,676.60 and 86,635.76

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Solution

The fourth proportional to 117,189.30, 161,676.60 and 86,635.76 is: 119,524.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,189.30 : 161,676.60 = 86,635.76 : x
  2. Step 2: Convert to fraction form
    117,189.30/161,676.60 = 86,635.76/x
  3. Step 3: Cross multiply
    117,189.30x = 161,676.60 × 86,635.76
  4. Step 4: Simplify right side
    117,189.30x = 14,006,975,115.22
  5. Step 5: Solve for x
    x = 14,006,975,115.22/117,189.30
  6. Step 6: Final answer
    x = 119,524.35

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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.