Home / 125,137.31-172,646.64-71,383.68

Finding the Fourth Proportional to 125,137.31, 172,646.64 and 71,383.68

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Solution

The fourth proportional to 125,137.31, 172,646.64 and 71,383.68 is: 98,485.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,137.31 : 172,646.64 = 71,383.68 : x
  2. Step 2: Convert to fraction form
    125,137.31/172,646.64 = 71,383.68/x
  3. Step 3: Cross multiply
    125,137.31x = 172,646.64 × 71,383.68
  4. Step 4: Simplify right side
    125,137.31x = 12,324,152,502.84
  5. Step 5: Solve for x
    x = 12,324,152,502.84/125,137.31
  6. Step 6: Final answer
    x = 98,485.04

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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.