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Finding the Fourth Proportional to 103,453.80, 155,180.70 and 92,300.10

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Solution

The fourth proportional to 103,453.80, 155,180.70 and 92,300.10 is: 138,450.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,453.80 : 155,180.70 = 92,300.10 : x
  2. Step 2: Convert to fraction form
    103,453.80/155,180.70 = 92,300.10/x
  3. Step 3: Cross multiply
    103,453.80x = 155,180.70 × 92,300.10
  4. Step 4: Simplify right side
    103,453.80x = 14,323,194,128.07
  5. Step 5: Solve for x
    x = 14,323,194,128.07/103,453.80
  6. Step 6: Final answer
    x = 138,450.15

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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.