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Finding the Third Proportional to 66,888.28 and 143,116.88

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Solution

The third proportional to 66,888.28 and 143,116.88 is: 306,218.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,888.28 : 143,116.88 = 143,116.88 : x
  2. Step 2: Convert to fraction form
    66,888.28/143,116.88 = 143,116.88/x
  3. Step 3: Cross multiply
    66,888.28x = 143,116.88 × 143,116.88
  4. Step 4: Simplify right side
    66,888.28x = 20,482,439,909.77
  5. Step 5: Solve for x
    x = 20,482,439,909.77/66,888.28
  6. Step 6: Final answer
    x = 306,218.66

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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.