Home / 143,438.13-214,960.37-90,753.30

Finding the Fourth Proportional to 143,438.13, 214,960.37 and 90,753.30

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Solution

The fourth proportional to 143,438.13, 214,960.37 and 90,753.30 is: 136,005.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,438.13 : 214,960.37 = 90,753.30 : x
  2. Step 2: Convert to fraction form
    143,438.13/214,960.37 = 90,753.30/x
  3. Step 3: Cross multiply
    143,438.13x = 214,960.37 × 90,753.30
  4. Step 4: Simplify right side
    143,438.13x = 19,508,362,492.95
  5. Step 5: Solve for x
    x = 19,508,362,492.95/143,438.13
  6. Step 6: Final answer
    x = 136,005.42

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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.