Home / 80,724,010.60-121,086,015.90-80,220,125.80

Finding the Fourth Proportional to 80,724,010.60, 121,086,015.90 and 80,220,125.80

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Solution

The fourth proportional to 80,724,010.60, 121,086,015.90 and 80,220,125.80 is: 120,330,188.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,724,010.60 : 121,086,015.90 = 80,220,125.80 : x
  2. Step 2: Convert to fraction form
    80,724,010.60/121,086,015.90 = 80,220,125.80/x
  3. Step 3: Cross multiply
    80,724,010.60x = 121,086,015.90 × 80,220,125.80
  4. Step 4: Simplify right side
    80,724,010.60x = 9,713,535,428,118,800
  5. Step 5: Solve for x
    x = 9,713,535,428,118,800/80,724,010.60
  6. Step 6: Final answer
    x = 120,330,188.70

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1.5x scale

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.