Home / 316,786.03-475,180.65-80,128.94

Finding the Fourth Proportional to 316,786.03, 475,180.65 and 80,128.94

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Solution

The fourth proportional to 316,786.03, 475,180.65 and 80,128.94 is: 120,193.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,786.03 : 475,180.65 = 80,128.94 : x
  2. Step 2: Convert to fraction form
    316,786.03/475,180.65 = 80,128.94/x
  3. Step 3: Cross multiply
    316,786.03x = 475,180.65 × 80,128.94
  4. Step 4: Simplify right side
    316,786.03x = 38,075,720,978.92
  5. Step 5: Solve for x
    x = 38,075,720,978.92/316,786.03
  6. Step 6: Final answer
    x = 120,193.81

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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.