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Finding the Fourth Proportional to 143,416.98, 215,097.12 and 136,304.64

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Solution

The fourth proportional to 143,416.98, 215,097.12 and 136,304.64 is: 204,430.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,416.98 : 215,097.12 = 136,304.64 : x
  2. Step 2: Convert to fraction form
    143,416.98/215,097.12 = 136,304.64/x
  3. Step 3: Cross multiply
    143,416.98x = 215,097.12 × 136,304.64
  4. Step 4: Simplify right side
    143,416.98x = 29,318,735,506.64
  5. Step 5: Solve for x
    x = 29,318,735,506.64/143,416.98
  6. Step 6: Final answer
    x = 204,430.02

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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.