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Finding the Fourth Proportional to 100,610.43, 150,774.16 and 79,457.58

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Solution

The fourth proportional to 100,610.43, 150,774.16 and 79,457.58 is: 119,074.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,610.43 : 150,774.16 = 79,457.58 : x
  2. Step 2: Convert to fraction form
    100,610.43/150,774.16 = 79,457.58/x
  3. Step 3: Cross multiply
    100,610.43x = 150,774.16 × 79,457.58
  4. Step 4: Simplify right side
    100,610.43x = 11,980,149,880.13
  5. Step 5: Solve for x
    x = 11,980,149,880.13/100,610.43
  6. Step 6: Final answer
    x = 119,074.63

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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.