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Finding the Fourth Proportional to 108,023.40, 149,099.01 and 65,617.47

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Solution

The fourth proportional to 108,023.40, 149,099.01 and 65,617.47 is: 90,568.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,023.40 : 149,099.01 = 65,617.47 : x
  2. Step 2: Convert to fraction form
    108,023.40/149,099.01 = 65,617.47/x
  3. Step 3: Cross multiply
    108,023.40x = 149,099.01 × 65,617.47
  4. Step 4: Simplify right side
    108,023.40x = 9,783,499,815.70
  5. Step 5: Solve for x
    x = 9,783,499,815.70/108,023.40
  6. Step 6: Final answer
    x = 90,568.34

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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.