Home / 215,522.09-297,429.70-120,028.78

Finding the Fourth Proportional to 215,522.09, 297,429.70 and 120,028.78

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Solution

The fourth proportional to 215,522.09, 297,429.70 and 120,028.78 is: 165,644.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,522.09 : 297,429.70 = 120,028.78 : x
  2. Step 2: Convert to fraction form
    215,522.09/297,429.70 = 120,028.78/x
  3. Step 3: Cross multiply
    215,522.09x = 297,429.70 × 120,028.78
  4. Step 4: Simplify right side
    215,522.09x = 35,700,124,026.77
  5. Step 5: Solve for x
    x = 35,700,124,026.77/215,522.09
  6. Step 6: Final answer
    x = 165,644.85

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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.