Home / 143,092.40-214,638.60-90,561.20

Finding the Fourth Proportional to 143,092.40, 214,638.60 and 90,561.20

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Solution

The fourth proportional to 143,092.40, 214,638.60 and 90,561.20 is: 135,841.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,092.40 : 214,638.60 = 90,561.20 : x
  2. Step 2: Convert to fraction form
    143,092.40/214,638.60 = 90,561.20/x
  3. Step 3: Cross multiply
    143,092.40x = 214,638.60 × 90,561.20
  4. Step 4: Simplify right side
    143,092.40x = 19,437,929,182.32
  5. Step 5: Solve for x
    x = 19,437,929,182.32/143,092.40
  6. Step 6: Final answer
    x = 135,841.80

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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.