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Finding the Fourth Proportional to 125,833.98, 173,658.37 and 72,122.47

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Solution

The fourth proportional to 125,833.98, 173,658.37 and 72,122.47 is: 99,533.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,833.98 : 173,658.37 = 72,122.47 : x
  2. Step 2: Convert to fraction form
    125,833.98/173,658.37 = 72,122.47/x
  3. Step 3: Cross multiply
    125,833.98x = 173,658.37 × 72,122.47
  4. Step 4: Simplify right side
    125,833.98x = 12,524,669,351.67
  5. Step 5: Solve for x
    x = 12,524,669,351.67/125,833.98
  6. Step 6: Final answer
    x = 99,533.28

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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.