Home / 142,075.20-213,104.43-53,321.25

Finding the Fourth Proportional to 142,075.20, 213,104.43 and 53,321.25

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Solution

The fourth proportional to 142,075.20, 213,104.43 and 53,321.25 is: 79,978.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,075.20 : 213,104.43 = 53,321.25 : x
  2. Step 2: Convert to fraction form
    142,075.20/213,104.43 = 53,321.25/x
  3. Step 3: Cross multiply
    142,075.20x = 213,104.43 × 53,321.25
  4. Step 4: Simplify right side
    142,075.20x = 11,362,994,588.14
  5. Step 5: Solve for x
    x = 11,362,994,588.14/142,075.20
  6. Step 6: Final answer
    x = 79,978.73

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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.