Home / 131,220,194.40-196,830,291.60-90,405,525.60

Finding the Fourth Proportional to 131,220,194.40, 196,830,291.60 and 90,405,525.60

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Solution

The fourth proportional to 131,220,194.40, 196,830,291.60 and 90,405,525.60 is: 135,608,288.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,220,194.40 : 196,830,291.60 = 90,405,525.60 : x
  2. Step 2: Convert to fraction form
    131,220,194.40/196,830,291.60 = 90,405,525.60/x
  3. Step 3: Cross multiply
    131,220,194.40x = 196,830,291.60 × 90,405,525.60
  4. Step 4: Simplify right side
    131,220,194.40x = 17,794,545,966,099,264
  5. Step 5: Solve for x
    x = 17,794,545,966,099,264/131,220,194.40
  6. Step 6: Final answer
    x = 135,608,288.40

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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.