Home / 108,541.32-149,819.54-66,120.81

Finding the Fourth Proportional to 108,541.32, 149,819.54 and 66,120.81

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Solution

The fourth proportional to 108,541.32, 149,819.54 and 66,120.81 is: 91,266.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,541.32 : 149,819.54 = 66,120.81 : x
  2. Step 2: Convert to fraction form
    108,541.32/149,819.54 = 66,120.81/x
  3. Step 3: Cross multiply
    108,541.32x = 149,819.54 × 66,120.81
  4. Step 4: Simplify right side
    108,541.32x = 9,906,189,008.02
  5. Step 5: Solve for x
    x = 9,906,189,008.02/108,541.32
  6. Step 6: Final answer
    x = 91,266.52

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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.