Home / 209,381,297.78-288,758,090.34-131,071,990.20

Finding the Fourth Proportional to 209,381,297.78, 288,758,090.34 and 131,071,990.20

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Solution

The fourth proportional to 209,381,297.78, 288,758,090.34 and 131,071,990.20 is: 180,761,596.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,381,297.78 : 288,758,090.34 = 131,071,990.20 : x
  2. Step 2: Convert to fraction form
    209,381,297.78/288,758,090.34 = 131,071,990.20/x
  3. Step 3: Cross multiply
    209,381,297.78x = 288,758,090.34 × 131,071,990.20
  4. Step 4: Simplify right side
    209,381,297.78x = 37,848,097,587,215,192
  5. Step 5: Solve for x
    x = 37,848,097,587,215,192/209,381,297.78
  6. Step 6: Final answer
    x = 180,761,596.14

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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.