Home / 209,623.13-289,254.89-123,516.89

Finding the Fourth Proportional to 209,623.13, 289,254.89 and 123,516.89

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Solution

The fourth proportional to 209,623.13, 289,254.89 and 123,516.89 is: 170,438.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,623.13 : 289,254.89 = 123,516.89 : x
  2. Step 2: Convert to fraction form
    209,623.13/289,254.89 = 123,516.89/x
  3. Step 3: Cross multiply
    209,623.13x = 289,254.89 × 123,516.89
  4. Step 4: Simplify right side
    209,623.13x = 35,727,863,812.51
  5. Step 5: Solve for x
    x = 35,727,863,812.51/209,623.13
  6. Step 6: Final answer
    x = 170,438.56

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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.