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Finding the Fourth Proportional to 103,900.08, 155,850.12 and 83,254.80

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Solution

The fourth proportional to 103,900.08, 155,850.12 and 83,254.80 is: 124,882.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,900.08 : 155,850.12 = 83,254.80 : x
  2. Step 2: Convert to fraction form
    103,900.08/155,850.12 = 83,254.80/x
  3. Step 3: Cross multiply
    103,900.08x = 155,850.12 × 83,254.80
  4. Step 4: Simplify right side
    103,900.08x = 12,975,270,570.58
  5. Step 5: Solve for x
    x = 12,975,270,570.58/103,900.08
  6. Step 6: Final answer
    x = 124,882.20

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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.