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Finding the Fourth Proportional to 120,892.47, 166,852.86 and 69,897.09

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Solution

The fourth proportional to 120,892.47, 166,852.86 and 69,897.09 is: 96,470.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,892.47 : 166,852.86 = 69,897.09 : x
  2. Step 2: Convert to fraction form
    120,892.47/166,852.86 = 69,897.09/x
  3. Step 3: Cross multiply
    120,892.47x = 166,852.86 × 69,897.09
  4. Step 4: Simplify right side
    120,892.47x = 11,662,529,372.18
  5. Step 5: Solve for x
    x = 11,662,529,372.18/120,892.47
  6. Step 6: Final answer
    x = 96,470.27

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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.