Home / 141,858.07-212,643.43-91,969.76

Finding the Fourth Proportional to 141,858.07, 212,643.43 and 91,969.76

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Solution

The fourth proportional to 141,858.07, 212,643.43 and 91,969.76 is: 137,861.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,858.07 : 212,643.43 = 91,969.76 : x
  2. Step 2: Convert to fraction form
    141,858.07/212,643.43 = 91,969.76/x
  3. Step 3: Cross multiply
    141,858.07x = 212,643.43 × 91,969.76
  4. Step 4: Simplify right side
    141,858.07x = 19,556,765,524.36
  5. Step 5: Solve for x
    x = 19,556,765,524.36/141,858.07
  6. Step 6: Final answer
    x = 137,861.50

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.