Home / 143,815.86-215,536.23-77,177.97

Finding the Fourth Proportional to 143,815.86, 215,536.23 and 77,177.97

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Solution

The fourth proportional to 143,815.86, 215,536.23 and 77,177.97 is: 115,666.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,815.86 : 215,536.23 = 77,177.97 : x
  2. Step 2: Convert to fraction form
    143,815.86/215,536.23 = 77,177.97/x
  3. Step 3: Cross multiply
    143,815.86x = 215,536.23 × 77,177.97
  4. Step 4: Simplify right side
    143,815.86x = 16,634,648,692.85
  5. Step 5: Solve for x
    x = 16,634,648,692.85/143,815.86
  6. Step 6: Final answer
    x = 115,666.30

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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.