Home / 215,878.10-323,814.99-121,108.10

Finding the Fourth Proportional to 215,878.10, 323,814.99 and 121,108.10

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Solution

The fourth proportional to 215,878.10, 323,814.99 and 121,108.10 is: 181,660.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,878.10 : 323,814.99 = 121,108.10 : x
  2. Step 2: Convert to fraction form
    215,878.10/323,814.99 = 121,108.10/x
  3. Step 3: Cross multiply
    215,878.10x = 323,814.99 × 121,108.10
  4. Step 4: Simplify right side
    215,878.10x = 39,216,618,190.42
  5. Step 5: Solve for x
    x = 39,216,618,190.42/215,878.10
  6. Step 6: Final answer
    x = 181,660.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.