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Finding the Fourth Proportional to 139,883.97, 209,887.98 and 73,308.29

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Solution

The fourth proportional to 139,883.97, 209,887.98 and 73,308.29 is: 109,994.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,883.97 : 209,887.98 = 73,308.29 : x
  2. Step 2: Convert to fraction form
    139,883.97/209,887.98 = 73,308.29/x
  3. Step 3: Cross multiply
    139,883.97x = 209,887.98 × 73,308.29
  4. Step 4: Simplify right side
    139,883.97x = 15,386,528,905.35
  5. Step 5: Solve for x
    x = 15,386,528,905.35/139,883.97
  6. Step 6: Final answer
    x = 109,994.94

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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.