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Finding the Fourth Proportional to 125,339.37, 172,976.54 and 68,750.74

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Solution

The fourth proportional to 125,339.37, 172,976.54 and 68,750.74 is: 94,880.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,339.37 : 172,976.54 = 68,750.74 : x
  2. Step 2: Convert to fraction form
    125,339.37/172,976.54 = 68,750.74/x
  3. Step 3: Cross multiply
    125,339.37x = 172,976.54 × 68,750.74
  4. Step 4: Simplify right side
    125,339.37x = 11,892,265,127.64
  5. Step 5: Solve for x
    x = 11,892,265,127.64/125,339.37
  6. Step 6: Final answer
    x = 94,880.52

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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.