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Finding the Fourth Proportional to 261,662.04, 392,502.51 and 72,137.43

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Solution

The fourth proportional to 261,662.04, 392,502.51 and 72,137.43 is: 108,208.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,662.04 : 392,502.51 = 72,137.43 : x
  2. Step 2: Convert to fraction form
    261,662.04/392,502.51 = 72,137.43/x
  3. Step 3: Cross multiply
    261,662.04x = 392,502.51 × 72,137.43
  4. Step 4: Simplify right side
    261,662.04x = 28,314,122,339.95
  5. Step 5: Solve for x
    x = 28,314,122,339.95/261,662.04
  6. Step 6: Final answer
    x = 108,208.75

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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.