Home / 215,520.09-297,426.94-120,026.78

Finding the Fourth Proportional to 215,520.09, 297,426.94 and 120,026.78

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Solution

The fourth proportional to 215,520.09, 297,426.94 and 120,026.78 is: 165,642.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,520.09 : 297,426.94 = 120,026.78 : x
  2. Step 2: Convert to fraction form
    215,520.09/297,426.94 = 120,026.78/x
  3. Step 3: Cross multiply
    215,520.09x = 297,426.94 × 120,026.78
  4. Step 4: Simplify right side
    215,520.09x = 35,699,197,893.45
  5. Step 5: Solve for x
    x = 35,699,197,893.45/215,520.09
  6. Step 6: Final answer
    x = 165,642.09

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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.