Home / 121,985,289.60-182,809,972.80-80,928,009.60

Finding the Fourth Proportional to 121,985,289.60, 182,809,972.80 and 80,928,009.60

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Solution

The fourth proportional to 121,985,289.60, 182,809,972.80 and 80,928,009.60 is: 121,280,584.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,985,289.60 : 182,809,972.80 = 80,928,009.60 : x
  2. Step 2: Convert to fraction form
    121,985,289.60/182,809,972.80 = 80,928,009.60/x
  3. Step 3: Cross multiply
    121,985,289.60x = 182,809,972.80 × 80,928,009.60
  4. Step 4: Simplify right side
    121,985,289.60x = 14,794,447,233,734,138
  5. Step 5: Solve for x
    x = 14,794,447,233,734,138/121,985,289.60
  6. Step 6: Final answer
    x = 121,280,584.59

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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.