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Finding the Fourth Proportional to 122,381.35, 168,885.52 and 68,666.20

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Solution

The fourth proportional to 122,381.35, 168,885.52 and 68,666.20 is: 94,758.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,381.35 : 168,885.52 = 68,666.20 : x
  2. Step 2: Convert to fraction form
    122,381.35/168,885.52 = 68,666.20/x
  3. Step 3: Cross multiply
    122,381.35x = 168,885.52 × 68,666.20
  4. Step 4: Simplify right side
    122,381.35x = 11,596,726,299.54
  5. Step 5: Solve for x
    x = 11,596,726,299.54/122,381.35
  6. Step 6: Final answer
    x = 94,758.94

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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.