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Finding the Fourth Proportional to 125,018.56, 172,525.60 and 68,429.92

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Solution

The fourth proportional to 125,018.56, 172,525.60 and 68,429.92 is: 94,433.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,018.56 : 172,525.60 = 68,429.92 : x
  2. Step 2: Convert to fraction form
    125,018.56/172,525.60 = 68,429.92/x
  3. Step 3: Cross multiply
    125,018.56x = 172,525.60 × 68,429.92
  4. Step 4: Simplify right side
    125,018.56x = 11,805,913,005.95
  5. Step 5: Solve for x
    x = 11,805,913,005.95/125,018.56
  6. Step 6: Final answer
    x = 94,433.28

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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.