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Finding the Third Proportional to 100,685,576.81 and 155,339,521.88

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Solution

The third proportional to 100,685,576.81 and 155,339,521.88 is: 239,660,612.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,685,576.81 : 155,339,521.88 = 155,339,521.88 : x
  2. Step 2: Convert to fraction form
    100,685,576.81/155,339,521.88 = 155,339,521.88/x
  3. Step 3: Cross multiply
    100,685,576.81x = 155,339,521.88 × 155,339,521.88
  4. Step 4: Simplify right side
    100,685,576.81x = 24,130,367,056,353,604
  5. Step 5: Solve for x
    x = 24,130,367,056,353,604/100,685,576.81
  6. Step 6: Final answer
    x = 239,660,612.97

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.