Home / 113,485,607.70-170,228,411.55-78,848,193.30

Finding the Fourth Proportional to 113,485,607.70, 170,228,411.55 and 78,848,193.30

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Solution

The fourth proportional to 113,485,607.70, 170,228,411.55 and 78,848,193.30 is: 118,272,289.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,485,607.70 : 170,228,411.55 = 78,848,193.30 : x
  2. Step 2: Convert to fraction form
    113,485,607.70/170,228,411.55 = 78,848,193.30/x
  3. Step 3: Cross multiply
    113,485,607.70x = 170,228,411.55 × 78,848,193.30
  4. Step 4: Simplify right side
    113,485,607.70x = 13,422,202,699,046,354
  5. Step 5: Solve for x
    x = 13,422,202,699,046,354/113,485,607.70
  6. Step 6: Final answer
    x = 118,272,289.95

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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.