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Finding the Third Proportional to 66,916.13 and 143,263.69

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Solution

The third proportional to 66,916.13 and 143,263.69 is: 306,719.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,916.13 : 143,263.69 = 143,263.69 : x
  2. Step 2: Convert to fraction form
    66,916.13/143,263.69 = 143,263.69/x
  3. Step 3: Cross multiply
    66,916.13x = 143,263.69 × 143,263.69
  4. Step 4: Simplify right side
    66,916.13x = 20,524,484,156.10
  5. Step 5: Solve for x
    x = 20,524,484,156.10/66,916.13
  6. Step 6: Final answer
    x = 306,719.56

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.