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Finding the Fourth Proportional to 108,455.67, 162,682.92 and 72,355.77

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Solution

The fourth proportional to 108,455.67, 162,682.92 and 72,355.77 is: 108,533.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,455.67 : 162,682.92 = 72,355.77 : x
  2. Step 2: Convert to fraction form
    108,455.67/162,682.92 = 72,355.77/x
  3. Step 3: Cross multiply
    108,455.67x = 162,682.92 × 72,355.77
  4. Step 4: Simplify right side
    108,455.67x = 11,771,047,942.45
  5. Step 5: Solve for x
    x = 11,771,047,942.45/108,455.67
  6. Step 6: Final answer
    x = 108,533.26

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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.