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Finding the Fourth Proportional to 125,800.30, 173,570.07 and 87,516.87

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Solution

The fourth proportional to 125,800.30, 173,570.07 and 87,516.87 is: 120,749.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,800.30 : 173,570.07 = 87,516.87 : x
  2. Step 2: Convert to fraction form
    125,800.30/173,570.07 = 87,516.87/x
  3. Step 3: Cross multiply
    125,800.30x = 173,570.07 × 87,516.87
  4. Step 4: Simplify right side
    125,800.30x = 15,190,309,252.08
  5. Step 5: Solve for x
    x = 15,190,309,252.08/125,800.30
  6. Step 6: Final answer
    x = 120,749.39

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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.