Home / 215,578.98-297,498.78-120,108.60

Finding the Fourth Proportional to 215,578.98, 297,498.78 and 120,108.60

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Solution

The fourth proportional to 215,578.98, 297,498.78 and 120,108.60 is: 165,749.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,578.98 : 297,498.78 = 120,108.60 : x
  2. Step 2: Convert to fraction form
    215,578.98/297,498.78 = 120,108.60/x
  3. Step 3: Cross multiply
    215,578.98x = 297,498.78 × 120,108.60
  4. Step 4: Simplify right side
    215,578.98x = 35,732,161,967.51
  5. Step 5: Solve for x
    x = 35,732,161,967.51/215,578.98
  6. Step 6: Final answer
    x = 165,749.75

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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.