Home / 213,579.90-320,418.45-124,787.70

Finding the Fourth Proportional to 213,579.90, 320,418.45 and 124,787.70

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Solution

The fourth proportional to 213,579.90, 320,418.45 and 124,787.70 is: 187,209.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,579.90 : 320,418.45 = 124,787.70 : x
  2. Step 2: Convert to fraction form
    213,579.90/320,418.45 = 124,787.70/x
  3. Step 3: Cross multiply
    213,579.90x = 320,418.45 × 124,787.70
  4. Step 4: Simplify right side
    213,579.90x = 39,984,281,413.07
  5. Step 5: Solve for x
    x = 39,984,281,413.07/213,579.90
  6. Step 6: Final answer
    x = 187,209.95

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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.