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Finding the Fourth Proportional to 108,025.67, 149,102.10 and 65,619.74

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Solution

The fourth proportional to 108,025.67, 149,102.10 and 65,619.74 is: 90,571.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,025.67 : 149,102.10 = 65,619.74 : x
  2. Step 2: Convert to fraction form
    108,025.67/149,102.10 = 65,619.74/x
  3. Step 3: Cross multiply
    108,025.67x = 149,102.10 × 65,619.74
  4. Step 4: Simplify right side
    108,025.67x = 9,784,041,035.45
  5. Step 5: Solve for x
    x = 9,784,041,035.45/108,025.67
  6. Step 6: Final answer
    x = 90,571.45

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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.