Home / 154,682,010.72-213,456,913.74-85,067,384.28

Finding the Fourth Proportional to 154,682,010.72, 213,456,913.74 and 85,067,384.28

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Solution

The fourth proportional to 154,682,010.72, 213,456,913.74 and 85,067,384.28 is: 117,390,646.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,682,010.72 : 213,456,913.74 = 85,067,384.28 : x
  2. Step 2: Convert to fraction form
    154,682,010.72/213,456,913.74 = 85,067,384.28/x
  3. Step 3: Cross multiply
    154,682,010.72x = 213,456,913.74 × 85,067,384.28
  4. Step 4: Simplify right side
    154,682,010.72x = 18,158,221,308,343,392
  5. Step 5: Solve for x
    x = 18,158,221,308,343,392/154,682,010.72
  6. Step 6: Final answer
    x = 117,390,646.94

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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.