Home / 154,751,378.84-213,556,901.46-85,135,265.72

Finding the Fourth Proportional to 154,751,378.84, 213,556,901.46 and 85,135,265.72

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Solution

The fourth proportional to 154,751,378.84, 213,556,901.46 and 85,135,265.72 is: 117,486,665.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,751,378.84 : 213,556,901.46 = 85,135,265.72 : x
  2. Step 2: Convert to fraction form
    154,751,378.84/213,556,901.46 = 85,135,265.72/x
  3. Step 3: Cross multiply
    154,751,378.84x = 213,556,901.46 × 85,135,265.72
  4. Step 4: Simplify right side
    154,751,378.84x = 18,181,223,552,136,956
  5. Step 5: Solve for x
    x = 18,181,223,552,136,956/154,751,378.84
  6. Step 6: Final answer
    x = 117,486,665.96

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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.