Home / 209,787.03-289,543.55-123,740.73

Finding the Fourth Proportional to 209,787.03, 289,543.55 and 123,740.73

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Solution

The fourth proportional to 209,787.03, 289,543.55 and 123,740.73 is: 170,784.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,787.03 : 289,543.55 = 123,740.73 : x
  2. Step 2: Convert to fraction form
    209,787.03/289,543.55 = 123,740.73/x
  3. Step 3: Cross multiply
    209,787.03x = 289,543.55 × 123,740.73
  4. Step 4: Simplify right side
    209,787.03x = 35,828,329,625.09
  5. Step 5: Solve for x
    x = 35,828,329,625.09/209,787.03
  6. Step 6: Final answer
    x = 170,784.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.