Home / 141,868.82-212,427.80-85,633.76

Finding the Fourth Proportional to 141,868.82, 212,427.80 and 85,633.76

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Solution

The fourth proportional to 141,868.82, 212,427.80 and 85,633.76 is: 128,224.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,868.82 : 212,427.80 = 85,633.76 : x
  2. Step 2: Convert to fraction form
    141,868.82/212,427.80 = 85,633.76/x
  3. Step 3: Cross multiply
    141,868.82x = 212,427.80 × 85,633.76
  4. Step 4: Simplify right side
    141,868.82x = 18,190,991,666.56
  5. Step 5: Solve for x
    x = 18,190,991,666.56/141,868.82
  6. Step 6: Final answer
    x = 128,224.03

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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.