Home / 120,579.40-166,403.40-66,869.40

Finding the Fourth Proportional to 120,579.40, 166,403.40 and 66,869.40

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Solution

The fourth proportional to 120,579.40, 166,403.40 and 66,869.40 is: 92,281.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,579.40 : 166,403.40 = 66,869.40 : x
  2. Step 2: Convert to fraction form
    120,579.40/166,403.40 = 66,869.40/x
  3. Step 3: Cross multiply
    120,579.40x = 166,403.40 × 66,869.40
  4. Step 4: Simplify right side
    120,579.40x = 11,127,295,515.96
  5. Step 5: Solve for x
    x = 11,127,295,515.96/120,579.40
  6. Step 6: Final answer
    x = 92,281.89

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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.