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Finding the Fourth Proportional to 103,986.57, 143,508.03 and 58,648.01

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Solution

The fourth proportional to 103,986.57, 143,508.03 and 58,648.01 is: 80,937.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,986.57 : 143,508.03 = 58,648.01 : x
  2. Step 2: Convert to fraction form
    103,986.57/143,508.03 = 58,648.01/x
  3. Step 3: Cross multiply
    103,986.57x = 143,508.03 × 58,648.01
  4. Step 4: Simplify right side
    103,986.57x = 8,416,460,495.70
  5. Step 5: Solve for x
    x = 8,416,460,495.70/103,986.57
  6. Step 6: Final answer
    x = 80,937.96

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.