Home / 143,805.85-215,688.80-76,308.35

Finding the Fourth Proportional to 143,805.85, 215,688.80 and 76,308.35

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Solution

The fourth proportional to 143,805.85, 215,688.80 and 76,308.35 is: 114,451.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,805.85 : 215,688.80 = 76,308.35 : x
  2. Step 2: Convert to fraction form
    143,805.85/215,688.80 = 76,308.35/x
  3. Step 3: Cross multiply
    143,805.85x = 215,688.80 × 76,308.35
  4. Step 4: Simplify right side
    143,805.85x = 16,458,855,553.81
  5. Step 5: Solve for x
    x = 16,458,855,553.81/143,805.85
  6. Step 6: Final answer
    x = 114,451.92

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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.