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Finding the Fourth Proportional to 103,081.51, 154,490.14 and 89,698.89

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Solution

The fourth proportional to 103,081.51, 154,490.14 and 89,698.89 is: 134,433.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,081.51 : 154,490.14 = 89,698.89 : x
  2. Step 2: Convert to fraction form
    103,081.51/154,490.14 = 89,698.89/x
  3. Step 3: Cross multiply
    103,081.51x = 154,490.14 × 89,698.89
  4. Step 4: Simplify right side
    103,081.51x = 13,857,594,260.85
  5. Step 5: Solve for x
    x = 13,857,594,260.85/103,081.51
  6. Step 6: Final answer
    x = 134,433.36

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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.