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Finding the Third Proportional to 66,631.36 and 143,931.94

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Solution

The third proportional to 66,631.36 and 143,931.94 is: 310,910.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,631.36 : 143,931.94 = 143,931.94 : x
  2. Step 2: Convert to fraction form
    66,631.36/143,931.94 = 143,931.94/x
  3. Step 3: Cross multiply
    66,631.36x = 143,931.94 × 143,931.94
  4. Step 4: Simplify right side
    66,631.36x = 20,716,402,632.50
  5. Step 5: Solve for x
    x = 20,716,402,632.50/66,631.36
  6. Step 6: Final answer
    x = 310,910.70

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.