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Finding the Third Proportional to 64,688.63 and 141,399

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Solution

The third proportional to 64,688.63 and 141,399 is: 309,075.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,688.63 : 141,399 = 141,399 : x
  2. Step 2: Convert to fraction form
    64,688.63/141,399 = 141,399/x
  3. Step 3: Cross multiply
    64,688.63x = 141,399 × 141,399
  4. Step 4: Simplify right side
    64,688.63x = 19,993,677,201
  5. Step 5: Solve for x
    x = 19,993,677,201/64,688.63
  6. Step 6: Final answer
    x = 309,075.62

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.