Home / 108,428.22-162,642.54-71,019.60

Finding the Fourth Proportional to 108,428.22, 162,642.54 and 71,019.60

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Solution

The fourth proportional to 108,428.22, 162,642.54 and 71,019.60 is: 106,529.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,428.22 : 162,642.54 = 71,019.60 : x
  2. Step 2: Convert to fraction form
    108,428.22/162,642.54 = 71,019.60/x
  3. Step 3: Cross multiply
    108,428.22x = 162,642.54 × 71,019.60
  4. Step 4: Simplify right side
    108,428.22x = 11,550,808,133.78
  5. Step 5: Solve for x
    x = 11,550,808,133.78/108,428.22
  6. Step 6: Final answer
    x = 106,529.54

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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.