Home / 215,614.51-297,522.21-123,729.07

Finding the Fourth Proportional to 215,614.51, 297,522.21 and 123,729.07

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Solution

The fourth proportional to 215,614.51, 297,522.21 and 123,729.07 is: 170,731.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,614.51 : 297,522.21 = 123,729.07 : x
  2. Step 2: Convert to fraction form
    215,614.51/297,522.21 = 123,729.07/x
  3. Step 3: Cross multiply
    215,614.51x = 297,522.21 × 123,729.07
  4. Step 4: Simplify right side
    215,614.51x = 36,812,146,625.68
  5. Step 5: Solve for x
    x = 36,812,146,625.68/215,614.51
  6. Step 6: Final answer
    x = 170,731.31

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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.