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Finding the Fourth Proportional to 103,628.10, 155,442.15 and 101,900.10

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Solution

The fourth proportional to 103,628.10, 155,442.15 and 101,900.10 is: 152,850.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,628.10 : 155,442.15 = 101,900.10 : x
  2. Step 2: Convert to fraction form
    103,628.10/155,442.15 = 101,900.10/x
  3. Step 3: Cross multiply
    103,628.10x = 155,442.15 × 101,900.10
  4. Step 4: Simplify right side
    103,628.10x = 15,839,570,629.22
  5. Step 5: Solve for x
    x = 15,839,570,629.22/103,628.10
  6. Step 6: Final answer
    x = 152,850.15

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1.5x scale

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.