Home / 120,386.81-166,133.45-69,399.25

Finding the Fourth Proportional to 120,386.81, 166,133.45 and 69,399.25

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Solution

The fourth proportional to 120,386.81, 166,133.45 and 69,399.25 is: 95,770.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,386.81 : 166,133.45 = 69,399.25 : x
  2. Step 2: Convert to fraction form
    120,386.81/166,133.45 = 69,399.25/x
  3. Step 3: Cross multiply
    120,386.81x = 166,133.45 × 69,399.25
  4. Step 4: Simplify right side
    120,386.81x = 11,529,536,588.08
  5. Step 5: Solve for x
    x = 11,529,536,588.08/120,386.81
  6. Step 6: Final answer
    x = 95,770.76

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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.