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Finding the Fourth Proportional to 84,240,136.90, 126,360,205.35 and 84,240,136.90

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Solution

The fourth proportional to 84,240,136.90, 126,360,205.35 and 84,240,136.90 is: 126,360,205.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,240,136.90 : 126,360,205.35 = 84,240,136.90 : x
  2. Step 2: Convert to fraction form
    84,240,136.90/126,360,205.35 = 84,240,136.90/x
  3. Step 3: Cross multiply
    84,240,136.90x = 126,360,205.35 × 84,240,136.90
  4. Step 4: Simplify right side
    84,240,136.90x = 10,644,600,997,396,112
  5. Step 5: Solve for x
    x = 10,644,600,997,396,112/84,240,136.90
  6. Step 6: Final answer
    x = 126,360,205.35

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.