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Finding the Fourth Proportional to 139,086, 208,450.12 and 63,129.04

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Solution

The fourth proportional to 139,086, 208,450.12 and 63,129.04 is: 94,612.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,086 : 208,450.12 = 63,129.04 : x
  2. Step 2: Convert to fraction form
    139,086/208,450.12 = 63,129.04/x
  3. Step 3: Cross multiply
    139,086x = 208,450.12 × 63,129.04
  4. Step 4: Simplify right side
    139,086x = 13,159,255,963.48
  5. Step 5: Solve for x
    x = 13,159,255,963.48/139,086
  6. Step 6: Final answer
    x = 94,612.37

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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.