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Finding the Fourth Proportional to 125,058.01, 172,563.96 and 71,339.81

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Solution

The fourth proportional to 125,058.01, 172,563.96 and 71,339.81 is: 98,439.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,058.01 : 172,563.96 = 71,339.81 : x
  2. Step 2: Convert to fraction form
    125,058.01/172,563.96 = 71,339.81/x
  3. Step 3: Cross multiply
    125,058.01x = 172,563.96 × 71,339.81
  4. Step 4: Simplify right side
    125,058.01x = 12,310,680,119.25
  5. Step 5: Solve for x
    x = 12,310,680,119.25/125,058.01
  6. Step 6: Final answer
    x = 98,439.76

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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.