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Finding the Fourth Proportional to 122,000.71, 168,359.32 and 68,285.71

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Solution

The fourth proportional to 122,000.71, 168,359.32 and 68,285.71 is: 94,233.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,000.71 : 168,359.32 = 68,285.71 : x
  2. Step 2: Convert to fraction form
    122,000.71/168,359.32 = 68,285.71/x
  3. Step 3: Cross multiply
    122,000.71x = 168,359.32 × 68,285.71
  4. Step 4: Simplify right side
    122,000.71x = 11,496,534,518.09
  5. Step 5: Solve for x
    x = 11,496,534,518.09/122,000.71
  6. Step 6: Final answer
    x = 94,233.34

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1.5x scale

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.