Home / 153,997.85-212,514.78-86,015.79

Finding the Fourth Proportional to 153,997.85, 212,514.78 and 86,015.79

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Solution

The fourth proportional to 153,997.85, 212,514.78 and 86,015.79 is: 118,700.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,997.85 : 212,514.78 = 86,015.79 : x
  2. Step 2: Convert to fraction form
    153,997.85/212,514.78 = 86,015.79/x
  3. Step 3: Cross multiply
    153,997.85x = 212,514.78 × 86,015.79
  4. Step 4: Simplify right side
    153,997.85x = 18,279,625,840.84
  5. Step 5: Solve for x
    x = 18,279,625,840.84/153,997.85
  6. Step 6: Final answer
    x = 118,700.53

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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.