Home / 209,163,321.43-313,783,288.80-86,274,601.54

Finding the Fourth Proportional to 209,163,321.43, 313,783,288.80 and 86,274,601.54

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Solution

The fourth proportional to 209,163,321.43, 313,783,288.80 and 86,274,601.54 is: 129,427,702.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,163,321.43 : 313,783,288.80 = 86,274,601.54 : x
  2. Step 2: Convert to fraction form
    209,163,321.43/313,783,288.80 = 86,274,601.54/x
  3. Step 3: Cross multiply
    209,163,321.43x = 313,783,288.80 × 86,274,601.54
  4. Step 4: Simplify right side
    209,163,321.43x = 27,071,528,211,130,748
  5. Step 5: Solve for x
    x = 27,071,528,211,130,748/209,163,321.43
  6. Step 6: Final answer
    x = 129,427,702.84

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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.