Home / 208,938.20-313,277.70-120,147.80

Finding the Fourth Proportional to 208,938.20, 313,277.70 and 120,147.80

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Solution

The fourth proportional to 208,938.20, 313,277.70 and 120,147.80 is: 180,147.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,938.20 : 313,277.70 = 120,147.80 : x
  2. Step 2: Convert to fraction form
    208,938.20/313,277.70 = 120,147.80/x
  3. Step 3: Cross multiply
    208,938.20x = 313,277.70 × 120,147.80
  4. Step 4: Simplify right side
    208,938.20x = 37,639,626,444.06
  5. Step 5: Solve for x
    x = 37,639,626,444.06/208,938.20
  6. Step 6: Final answer
    x = 180,147.17

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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.