Home / 120,431.51-166,195.37-66,719.87

Finding the Fourth Proportional to 120,431.51, 166,195.37 and 66,719.87

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Solution

The fourth proportional to 120,431.51, 166,195.37 and 66,719.87 is: 92,073.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,431.51 : 166,195.37 = 66,719.87 : x
  2. Step 2: Convert to fraction form
    120,431.51/166,195.37 = 66,719.87/x
  3. Step 3: Cross multiply
    120,431.51x = 166,195.37 × 66,719.87
  4. Step 4: Simplify right side
    120,431.51x = 11,088,533,147.40
  5. Step 5: Solve for x
    x = 11,088,533,147.40/120,431.51
  6. Step 6: Final answer
    x = 92,073.35

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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.