Home / 101,680,902.78-140,319,736.25-55,271,156.70

Finding the Fourth Proportional to 101,680,902.78, 140,319,736.25 and 55,271,156.70

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Solution

The fourth proportional to 101,680,902.78, 140,319,736.25 and 55,271,156.70 is: 76,274,245.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,680,902.78 : 140,319,736.25 = 55,271,156.70 : x
  2. Step 2: Convert to fraction form
    101,680,902.78/140,319,736.25 = 55,271,156.70/x
  3. Step 3: Cross multiply
    101,680,902.78x = 140,319,736.25 × 55,271,156.70
  4. Step 4: Simplify right side
    101,680,902.78x = 7,755,634,130,376,421
  5. Step 5: Solve for x
    x = 7,755,634,130,376,421/101,680,902.78
  6. Step 6: Final answer
    x = 76,274,245.39

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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.