Home / 171,949,209.71-257,685,191.03-78,347,431.06

Finding the Fourth Proportional to 171,949,209.71, 257,685,191.03 and 78,347,431.06

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Solution

The fourth proportional to 171,949,209.71, 257,685,191.03 and 78,347,431.06 is: 117,412,419.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,949,209.71 : 257,685,191.03 = 78,347,431.06 : x
  2. Step 2: Convert to fraction form
    171,949,209.71/257,685,191.03 = 78,347,431.06/x
  3. Step 3: Cross multiply
    171,949,209.71x = 257,685,191.03 × 78,347,431.06
  4. Step 4: Simplify right side
    171,949,209.71x = 20,188,972,738,957,512
  5. Step 5: Solve for x
    x = 20,188,972,738,957,512/171,949,209.71
  6. Step 6: Final answer
    x = 117,412,419.48

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.