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Finding the Fourth Proportional to 139,287.30, 208,852.50 and 44,495.22

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Solution

The fourth proportional to 139,287.30, 208,852.50 and 44,495.22 is: 66,717.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,287.30 : 208,852.50 = 44,495.22 : x
  2. Step 2: Convert to fraction form
    139,287.30/208,852.50 = 44,495.22/x
  3. Step 3: Cross multiply
    139,287.30x = 208,852.50 × 44,495.22
  4. Step 4: Simplify right side
    139,287.30x = 9,292,937,935.05
  5. Step 5: Solve for x
    x = 9,292,937,935.05/139,287.30
  6. Step 6: Final answer
    x = 66,717.77

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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.