Home / 208,143.60-312,339.97-89,814.96

Finding the Fourth Proportional to 208,143.60, 312,339.97 and 89,814.96

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Solution

The fourth proportional to 208,143.60, 312,339.97 and 89,814.96 is: 134,776.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,143.60 : 312,339.97 = 89,814.96 : x
  2. Step 2: Convert to fraction form
    208,143.60/312,339.97 = 89,814.96/x
  3. Step 3: Cross multiply
    208,143.60x = 312,339.97 × 89,814.96
  4. Step 4: Simplify right side
    208,143.60x = 28,052,801,911.95
  5. Step 5: Solve for x
    x = 28,052,801,911.95/208,143.60
  6. Step 6: Final answer
    x = 134,776.19

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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.