Home / 153,853.09-212,327.94-85,883.43

Finding the Fourth Proportional to 153,853.09, 212,327.94 and 85,883.43

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Solution

The fourth proportional to 153,853.09, 212,327.94 and 85,883.43 is: 118,525.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,853.09 : 212,327.94 = 85,883.43 : x
  2. Step 2: Convert to fraction form
    153,853.09/212,327.94 = 85,883.43/x
  3. Step 3: Cross multiply
    153,853.09x = 212,327.94 × 85,883.43
  4. Step 4: Simplify right side
    153,853.09x = 18,235,451,772.03
  5. Step 5: Solve for x
    x = 18,235,451,772.03/153,853.09
  6. Step 6: Final answer
    x = 118,525.09

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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.