Home / 153,997.20-212,513.87-86,015.16

Finding the Fourth Proportional to 153,997.20, 212,513.87 and 86,015.16

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Solution

The fourth proportional to 153,997.20, 212,513.87 and 86,015.16 is: 118,699.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,997.20 : 212,513.87 = 86,015.16 : x
  2. Step 2: Convert to fraction form
    153,997.20/212,513.87 = 86,015.16/x
  3. Step 3: Cross multiply
    153,997.20x = 212,513.87 × 86,015.16
  4. Step 4: Simplify right side
    153,997.20x = 18,279,415,380.96
  5. Step 5: Solve for x
    x = 18,279,415,380.96/153,997.20
  6. Step 6: Final answer
    x = 118,699.66

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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.