Home / 153,436.12-211,741.74-86,369.56

Finding the Fourth Proportional to 153,436.12, 211,741.74 and 86,369.56

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Solution

The fourth proportional to 153,436.12, 211,741.74 and 86,369.56 is: 119,189.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,436.12 : 211,741.74 = 86,369.56 : x
  2. Step 2: Convert to fraction form
    153,436.12/211,741.74 = 86,369.56/x
  3. Step 3: Cross multiply
    153,436.12x = 211,741.74 × 86,369.56
  4. Step 4: Simplify right side
    153,436.12x = 18,288,040,917.43
  5. Step 5: Solve for x
    x = 18,288,040,917.43/153,436.12
  6. Step 6: Final answer
    x = 119,189.93

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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.