Home / 128,736,412.80-193,104,619.20-120,170,371.20

Finding the Fourth Proportional to 128,736,412.80, 193,104,619.20 and 120,170,371.20

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Solution

The fourth proportional to 128,736,412.80, 193,104,619.20 and 120,170,371.20 is: 180,255,556.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,736,412.80 : 193,104,619.20 = 120,170,371.20 : x
  2. Step 2: Convert to fraction form
    128,736,412.80/193,104,619.20 = 120,170,371.20/x
  3. Step 3: Cross multiply
    128,736,412.80x = 193,104,619.20 × 120,170,371.20
  4. Step 4: Simplify right side
    128,736,412.80x = 23,205,453,769,698,648
  5. Step 5: Solve for x
    x = 23,205,453,769,698,648/128,736,412.80
  6. Step 6: Final answer
    x = 180,255,556.80

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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.