Home / 120,387.06-166,133.80-69,399.50

Finding the Fourth Proportional to 120,387.06, 166,133.80 and 69,399.50

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Solution

The fourth proportional to 120,387.06, 166,133.80 and 69,399.50 is: 95,771.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,387.06 : 166,133.80 = 69,399.50 : x
  2. Step 2: Convert to fraction form
    120,387.06/166,133.80 = 69,399.50/x
  3. Step 3: Cross multiply
    120,387.06x = 166,133.80 × 69,399.50
  4. Step 4: Simplify right side
    120,387.06x = 11,529,602,064.27
  5. Step 5: Solve for x
    x = 11,529,602,064.27/120,387.06
  6. Step 6: Final answer
    x = 95,771.11

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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.