Home / 143,441.40-214,965.24-90,756.57

Finding the Fourth Proportional to 143,441.40, 214,965.24 and 90,756.57

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Solution

The fourth proportional to 143,441.40, 214,965.24 and 90,756.57 is: 136,010.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,441.40 : 214,965.24 = 90,756.57 : x
  2. Step 2: Convert to fraction form
    143,441.40/214,965.24 = 90,756.57/x
  3. Step 3: Cross multiply
    143,441.40x = 214,965.24 × 90,756.57
  4. Step 4: Simplify right side
    143,441.40x = 19,509,507,851.63
  5. Step 5: Solve for x
    x = 19,509,507,851.63/143,441.40
  6. Step 6: Final answer
    x = 136,010.30

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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.