Home / 105,199.20-145,172.58-57,452.75

Finding the Fourth Proportional to 105,199.20, 145,172.58 and 57,452.75

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Solution

The fourth proportional to 105,199.20, 145,172.58 and 57,452.75 is: 79,283.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,199.20 : 145,172.58 = 57,452.75 : x
  2. Step 2: Convert to fraction form
    105,199.20/145,172.58 = 57,452.75/x
  3. Step 3: Cross multiply
    105,199.20x = 145,172.58 × 57,452.75
  4. Step 4: Simplify right side
    105,199.20x = 8,340,563,945.60
  5. Step 5: Solve for x
    x = 8,340,563,945.60/105,199.20
  6. Step 6: Final answer
    x = 79,283.53

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1.5x scale

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.