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Finding the Fourth Proportional to 124,468.64, 186,726.84 and 68,278

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Solution

The fourth proportional to 124,468.64, 186,726.84 and 68,278 is: 102,430.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,468.64 : 186,726.84 = 68,278 : x
  2. Step 2: Convert to fraction form
    124,468.64/186,726.84 = 68,278/x
  3. Step 3: Cross multiply
    124,468.64x = 186,726.84 × 68,278
  4. Step 4: Simplify right side
    124,468.64x = 12,749,335,181.52
  5. Step 5: Solve for x
    x = 12,749,335,181.52/124,468.64
  6. Step 6: Final answer
    x = 102,430.10

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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.