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Finding the Fourth Proportional to 122,013, 168,368.67 and 74,261.07

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Solution

The fourth proportional to 122,013, 168,368.67 and 74,261.07 is: 102,474.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,013 : 168,368.67 = 74,261.07 : x
  2. Step 2: Convert to fraction form
    122,013/168,368.67 = 74,261.07/x
  3. Step 3: Cross multiply
    122,013x = 168,368.67 × 74,261.07
  4. Step 4: Simplify right side
    122,013x = 12,503,237,588.68
  5. Step 5: Solve for x
    x = 12,503,237,588.68/122,013
  6. Step 6: Final answer
    x = 102,474.63

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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.