Home / 214,156.53-320,968.25-138,054.40

Finding the Fourth Proportional to 214,156.53, 320,968.25 and 138,054.40

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Solution

The fourth proportional to 214,156.53, 320,968.25 and 138,054.40 is: 206,909.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,156.53 : 320,968.25 = 138,054.40 : x
  2. Step 2: Convert to fraction form
    214,156.53/320,968.25 = 138,054.40/x
  3. Step 3: Cross multiply
    214,156.53x = 320,968.25 × 138,054.40
  4. Step 4: Simplify right side
    214,156.53x = 44,311,078,712.26
  5. Step 5: Solve for x
    x = 44,311,078,712.26/214,156.53
  6. Step 6: Final answer
    x = 206,909.77

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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.