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Finding the Fourth Proportional to 124,054.30, 186,078 and 39,813.79

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Solution

The fourth proportional to 124,054.30, 186,078 and 39,813.79 is: 59,719.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,054.30 : 186,078 = 39,813.79 : x
  2. Step 2: Convert to fraction form
    124,054.30/186,078 = 39,813.79/x
  3. Step 3: Cross multiply
    124,054.30x = 186,078 × 39,813.79
  4. Step 4: Simplify right side
    124,054.30x = 7,408,470,415.62
  5. Step 5: Solve for x
    x = 7,408,470,415.62/124,054.30
  6. Step 6: Final answer
    x = 59,719.58

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.