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Finding the Fourth Proportional to 102,992.70, 154,373.85 and 58,640.70

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Solution

The fourth proportional to 102,992.70, 154,373.85 and 58,640.70 is: 87,895.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,992.70 : 154,373.85 = 58,640.70 : x
  2. Step 2: Convert to fraction form
    102,992.70/154,373.85 = 58,640.70/x
  3. Step 3: Cross multiply
    102,992.70x = 154,373.85 × 58,640.70
  4. Step 4: Simplify right side
    102,992.70x = 9,052,590,625.70
  5. Step 5: Solve for x
    x = 9,052,590,625.70/102,992.70
  6. Step 6: Final answer
    x = 87,895.46

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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.