Home / 122,799,942.70-169,540,400.08-78,171,096.01

Finding the Fourth Proportional to 122,799,942.70, 169,540,400.08 and 78,171,096.01

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Solution

The fourth proportional to 122,799,942.70, 169,540,400.08 and 78,171,096.01 is: 107,924,797.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,799,942.70 : 169,540,400.08 = 78,171,096.01 : x
  2. Step 2: Convert to fraction form
    122,799,942.70/169,540,400.08 = 78,171,096.01/x
  3. Step 3: Cross multiply
    122,799,942.70x = 169,540,400.08 × 78,171,096.01
  4. Step 4: Simplify right side
    122,799,942.70x = 13,253,158,892,438,906
  5. Step 5: Solve for x
    x = 13,253,158,892,438,906/122,799,942.70
  6. Step 6: Final answer
    x = 107,924,797.04

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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.