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Finding the Fourth Proportional to 143,976.66, 215,999.01 and 65,090.76

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Solution

The fourth proportional to 143,976.66, 215,999.01 and 65,090.76 is: 97,651.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,976.66 : 215,999.01 = 65,090.76 : x
  2. Step 2: Convert to fraction form
    143,976.66/215,999.01 = 65,090.76/x
  3. Step 3: Cross multiply
    143,976.66x = 215,999.01 × 65,090.76
  4. Step 4: Simplify right side
    143,976.66x = 14,059,539,720.15
  5. Step 5: Solve for x
    x = 14,059,539,720.15/143,976.66
  6. Step 6: Final answer
    x = 97,651.52

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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.