Home / 103,801.20-155,774.70-66,452.10

Finding the Fourth Proportional to 103,801.20, 155,774.70 and 66,452.10

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Solution

The fourth proportional to 103,801.20, 155,774.70 and 66,452.10 is: 99,724.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,801.20 : 155,774.70 = 66,452.10 : x
  2. Step 2: Convert to fraction form
    103,801.20/155,774.70 = 66,452.10/x
  3. Step 3: Cross multiply
    103,801.20x = 155,774.70 × 66,452.10
  4. Step 4: Simplify right side
    103,801.20x = 10,351,555,941.87
  5. Step 5: Solve for x
    x = 10,351,555,941.87/103,801.20
  6. Step 6: Final answer
    x = 99,724.82

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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.