Home / 142,075.03-212,999.38-82,035.42

Finding the Fourth Proportional to 142,075.03, 212,999.38 and 82,035.42

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Solution

The fourth proportional to 142,075.03, 212,999.38 and 82,035.42 is: 122,987.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,075.03 : 212,999.38 = 82,035.42 : x
  2. Step 2: Convert to fraction form
    142,075.03/212,999.38 = 82,035.42/x
  3. Step 3: Cross multiply
    142,075.03x = 212,999.38 × 82,035.42
  4. Step 4: Simplify right side
    142,075.03x = 17,473,493,187.86
  5. Step 5: Solve for x
    x = 17,473,493,187.86/142,075.03
  6. Step 6: Final answer
    x = 122,987.78

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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.