Home / 102,759,408.20-141,670,798.50-81,636,273.56

Finding the Fourth Proportional to 102,759,408.20, 141,670,798.50 and 81,636,273.56

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Solution

The fourth proportional to 102,759,408.20, 141,670,798.50 and 81,636,273.56 is: 112,549,072.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,759,408.20 : 141,670,798.50 = 81,636,273.56 : x
  2. Step 2: Convert to fraction form
    102,759,408.20/141,670,798.50 = 81,636,273.56/x
  3. Step 3: Cross multiply
    102,759,408.20x = 141,670,798.50 × 81,636,273.56
  4. Step 4: Simplify right side
    102,759,408.20x = 11,565,476,061,809,638
  5. Step 5: Solve for x
    x = 11,565,476,061,809,638/102,759,408.20
  6. Step 6: Final answer
    x = 112,549,072.29

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.