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Finding the Fourth Proportional to 103,687.70, 155,239.95 and 93,190.10

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Solution

The fourth proportional to 103,687.70, 155,239.95 and 93,190.10 is: 139,523.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,687.70 : 155,239.95 = 93,190.10 : x
  2. Step 2: Convert to fraction form
    103,687.70/155,239.95 = 93,190.10/x
  3. Step 3: Cross multiply
    103,687.70x = 155,239.95 × 93,190.10
  4. Step 4: Simplify right side
    103,687.70x = 14,466,826,464.50
  5. Step 5: Solve for x
    x = 14,466,826,464.50/103,687.70
  6. Step 6: Final answer
    x = 139,523.07

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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.