Home / 213,814.35-320,465.55-99,808.77

Finding the Fourth Proportional to 213,814.35, 320,465.55 and 99,808.77

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Solution

The fourth proportional to 213,814.35, 320,465.55 and 99,808.77 is: 149,593.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,814.35 : 320,465.55 = 99,808.77 : x
  2. Step 2: Convert to fraction form
    213,814.35/320,465.55 = 99,808.77/x
  3. Step 3: Cross multiply
    213,814.35x = 320,465.55 × 99,808.77
  4. Step 4: Simplify right side
    213,814.35x = 31,985,272,372.87
  5. Step 5: Solve for x
    x = 31,985,272,372.87/213,814.35
  6. Step 6: Final answer
    x = 149,593.67

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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.