Home / 199,997.60-275,996.88-115,131.20

Finding the Fourth Proportional to 199,997.60, 275,996.88 and 115,131.20

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Solution

The fourth proportional to 199,997.60, 275,996.88 and 115,131.20 is: 158,881.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,997.60 : 275,996.88 = 115,131.20 : x
  2. Step 2: Convert to fraction form
    199,997.60/275,996.88 = 115,131.20/x
  3. Step 3: Cross multiply
    199,997.60x = 275,996.88 × 115,131.20
  4. Step 4: Simplify right side
    199,997.60x = 31,775,851,990.66
  5. Step 5: Solve for x
    x = 31,775,851,990.66/199,997.60
  6. Step 6: Final answer
    x = 158,881.17

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1.5x scale

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.