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Finding the Fourth Proportional to 139,883.76, 209,887.66 and 73,308.06

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Solution

The fourth proportional to 139,883.76, 209,887.66 and 73,308.06 is: 109,994.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,883.76 : 209,887.66 = 73,308.06 : x
  2. Step 2: Convert to fraction form
    139,883.76/209,887.66 = 73,308.06/x
  3. Step 3: Cross multiply
    139,883.76x = 209,887.66 × 73,308.06
  4. Step 4: Simplify right side
    139,883.76x = 15,386,456,464.55
  5. Step 5: Solve for x
    x = 15,386,456,464.55/139,883.76
  6. Step 6: Final answer
    x = 109,994.59

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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.