Home / 213,813.35-320,464.05-99,807.77

Finding the Fourth Proportional to 213,813.35, 320,464.05 and 99,807.77

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Solution

The fourth proportional to 213,813.35, 320,464.05 and 99,807.77 is: 149,592.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,813.35 : 320,464.05 = 99,807.77 : x
  2. Step 2: Convert to fraction form
    213,813.35/320,464.05 = 99,807.77/x
  3. Step 3: Cross multiply
    213,813.35x = 320,464.05 × 99,807.77
  4. Step 4: Simplify right side
    213,813.35x = 31,984,800,593.35
  5. Step 5: Solve for x
    x = 31,984,800,593.35/213,813.35
  6. Step 6: Final answer
    x = 149,592.16

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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.