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Finding the Fourth Proportional to 125,230.56, 172,811.72 and 68,631

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Solution

The fourth proportional to 125,230.56, 172,811.72 and 68,631 is: 94,707.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,230.56 : 172,811.72 = 68,631 : x
  2. Step 2: Convert to fraction form
    125,230.56/172,811.72 = 68,631/x
  3. Step 3: Cross multiply
    125,230.56x = 172,811.72 × 68,631
  4. Step 4: Simplify right side
    125,230.56x = 11,860,241,155.32
  5. Step 5: Solve for x
    x = 11,860,241,155.32/125,230.56
  6. Step 6: Final answer
    x = 94,707.24

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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.