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Finding the Fourth Proportional to 122,289.15, 171,321.45 and 122,289.15

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Solution

The fourth proportional to 122,289.15, 171,321.45 and 122,289.15 is: 171,321.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,289.15 : 171,321.45 = 122,289.15 : x
  2. Step 2: Convert to fraction form
    122,289.15/171,321.45 = 122,289.15/x
  3. Step 3: Cross multiply
    122,289.15x = 171,321.45 × 122,289.15
  4. Step 4: Simplify right side
    122,289.15x = 20,950,754,497.27
  5. Step 5: Solve for x
    x = 20,950,754,497.27/122,289.15
  6. Step 6: Final answer
    x = 171,321.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.