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Finding the Fourth Proportional to 144,047.40, 215,811.90 and 123,311.40

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Solution

The fourth proportional to 144,047.40, 215,811.90 and 123,311.40 is: 184,745.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,047.40 : 215,811.90 = 123,311.40 : x
  2. Step 2: Convert to fraction form
    144,047.40/215,811.90 = 123,311.40/x
  3. Step 3: Cross multiply
    144,047.40x = 215,811.90 × 123,311.40
  4. Step 4: Simplify right side
    144,047.40x = 26,612,067,525.66
  5. Step 5: Solve for x
    x = 26,612,067,525.66/144,047.40
  6. Step 6: Final answer
    x = 184,745.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.