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Finding the Fourth Proportional to 143,809.76, 215,714.64 and 43,969.96

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Solution

The fourth proportional to 143,809.76, 215,714.64 and 43,969.96 is: 65,954.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,809.76 : 215,714.64 = 43,969.96 : x
  2. Step 2: Convert to fraction form
    143,809.76/215,714.64 = 43,969.96/x
  3. Step 3: Cross multiply
    143,809.76x = 215,714.64 × 43,969.96
  4. Step 4: Simplify right side
    143,809.76x = 9,484,963,013.64
  5. Step 5: Solve for x
    x = 9,484,963,013.64/143,809.76
  6. Step 6: Final answer
    x = 65,954.93

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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.