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Finding the Fourth Proportional to 122,071.05, 168,454.13 and 67,620.98

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Solution

The fourth proportional to 122,071.05, 168,454.13 and 67,620.98 is: 93,314.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,071.05 : 168,454.13 = 67,620.98 : x
  2. Step 2: Convert to fraction form
    122,071.05/168,454.13 = 67,620.98/x
  3. Step 3: Cross multiply
    122,071.05x = 168,454.13 × 67,620.98
  4. Step 4: Simplify right side
    122,071.05x = 11,391,032,175.27
  5. Step 5: Solve for x
    x = 11,391,032,175.27/122,071.05
  6. Step 6: Final answer
    x = 93,314.77

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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.