Home / 208,325.07-312,502.32-103,115.79

Finding the Fourth Proportional to 208,325.07, 312,502.32 and 103,115.79

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Solution

The fourth proportional to 208,325.07, 312,502.32 and 103,115.79 is: 154,680.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,325.07 : 312,502.32 = 103,115.79 : x
  2. Step 2: Convert to fraction form
    208,325.07/312,502.32 = 103,115.79/x
  3. Step 3: Cross multiply
    208,325.07x = 312,502.32 × 103,115.79
  4. Step 4: Simplify right side
    208,325.07x = 32,223,923,603.63
  5. Step 5: Solve for x
    x = 32,223,923,603.63/208,325.07
  6. Step 6: Final answer
    x = 154,680.97

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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.