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Finding the Fourth Proportional to 125,389.70, 173,037.74 and 71,675.86

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Solution

The fourth proportional to 125,389.70, 173,037.74 and 71,675.86 is: 98,912.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,389.70 : 173,037.74 = 71,675.86 : x
  2. Step 2: Convert to fraction form
    125,389.70/173,037.74 = 71,675.86/x
  3. Step 3: Cross multiply
    125,389.70x = 173,037.74 × 71,675.86
  4. Step 4: Simplify right side
    125,389.70x = 12,402,628,826.96
  5. Step 5: Solve for x
    x = 12,402,628,826.96/125,389.70
  6. Step 6: Final answer
    x = 98,912.66

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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.