Home / 208,225.18-312,370.58-75,138.03

Finding the Fourth Proportional to 208,225.18, 312,370.58 and 75,138.03

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Solution

The fourth proportional to 208,225.18, 312,370.58 and 75,138.03 is: 112,718.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,225.18 : 312,370.58 = 75,138.03 : x
  2. Step 2: Convert to fraction form
    208,225.18/312,370.58 = 75,138.03/x
  3. Step 3: Cross multiply
    208,225.18x = 312,370.58 × 75,138.03
  4. Step 4: Simplify right side
    208,225.18x = 23,470,909,776.35
  5. Step 5: Solve for x
    x = 23,470,909,776.35/208,225.18
  6. Step 6: Final answer
    x = 112,718.88

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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.