Home / 143,090.40-214,635.60-90,559.20

Finding the Fourth Proportional to 143,090.40, 214,635.60 and 90,559.20

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Solution

The fourth proportional to 143,090.40, 214,635.60 and 90,559.20 is: 135,838.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,090.40 : 214,635.60 = 90,559.20 : x
  2. Step 2: Convert to fraction form
    143,090.40/214,635.60 = 90,559.20/x
  3. Step 3: Cross multiply
    143,090.40x = 214,635.60 × 90,559.20
  4. Step 4: Simplify right side
    143,090.40x = 19,437,228,227.52
  5. Step 5: Solve for x
    x = 19,437,228,227.52/143,090.40
  6. Step 6: Final answer
    x = 135,838.80

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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.