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Finding the Fourth Proportional to 97,296.70, 145,660.71 and 87,958.21

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Solution

The fourth proportional to 97,296.70, 145,660.71 and 87,958.21 is: 131,680.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,296.70 : 145,660.71 = 87,958.21 : x
  2. Step 2: Convert to fraction form
    97,296.70/145,660.71 = 87,958.21/x
  3. Step 3: Cross multiply
    97,296.70x = 145,660.71 × 87,958.21
  4. Step 4: Simplify right side
    97,296.70x = 12,812,054,590.63
  5. Step 5: Solve for x
    x = 12,812,054,590.63/97,296.70
  6. Step 6: Final answer
    x = 131,680.27

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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.