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Finding the Third Proportional to 66,759,390 and 138,633,079.50

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Solution

The third proportional to 66,759,390 and 138,633,079.50 is: 287,886,553.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,759,390 : 138,633,079.50 = 138,633,079.50 : x
  2. Step 2: Convert to fraction form
    66,759,390/138,633,079.50 = 138,633,079.50/x
  3. Step 3: Cross multiply
    66,759,390x = 138,633,079.50 × 138,633,079.50
  4. Step 4: Simplify right side
    66,759,390x = 19,219,130,731,653,320
  5. Step 5: Solve for x
    x = 19,219,130,731,653,320/66,759,390
  6. Step 6: Final answer
    x = 287,886,553.96

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Why These Related Problems?

These problems maintain the same ratio (2.08) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.