Home / 85,824,278.70-128,736,418.05-80,113,584.30

Finding the Fourth Proportional to 85,824,278.70, 128,736,418.05 and 80,113,584.30

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Solution

The fourth proportional to 85,824,278.70, 128,736,418.05 and 80,113,584.30 is: 120,170,376.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,824,278.70 : 128,736,418.05 = 80,113,584.30 : x
  2. Step 2: Convert to fraction form
    85,824,278.70/128,736,418.05 = 80,113,584.30/x
  3. Step 3: Cross multiply
    85,824,278.70x = 128,736,418.05 × 80,113,584.30
  4. Step 4: Simplify right side
    85,824,278.70x = 10,313,535,879,928,716
  5. Step 5: Solve for x
    x = 10,313,535,879,928,716/85,824,278.70
  6. Step 6: Final answer
    x = 120,170,376.45

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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.