Home / 161,405,200.45-222,720,782.86-90,827,178.45

Finding the Fourth Proportional to 161,405,200.45, 222,720,782.86 and 90,827,178.45

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Solution

The fourth proportional to 161,405,200.45, 222,720,782.86 and 90,827,178.45 is: 125,331,155.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,405,200.45 : 222,720,782.86 = 90,827,178.45 : x
  2. Step 2: Convert to fraction form
    161,405,200.45/222,720,782.86 = 90,827,178.45/x
  3. Step 3: Cross multiply
    161,405,200.45x = 222,720,782.86 × 90,827,178.45
  4. Step 4: Simplify right side
    161,405,200.45x = 20,229,100,289,348,924
  5. Step 5: Solve for x
    x = 20,229,100,289,348,924/161,405,200.45
  6. Step 6: Final answer
    x = 125,331,155.58

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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.