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Finding the Fourth Proportional to 159,424.31, 220,015.50 and 87,804.32

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Solution

The fourth proportional to 159,424.31, 220,015.50 and 87,804.32 is: 121,175.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,424.31 : 220,015.50 = 87,804.32 : x
  2. Step 2: Convert to fraction form
    159,424.31/220,015.50 = 87,804.32/x
  3. Step 3: Cross multiply
    159,424.31x = 220,015.50 × 87,804.32
  4. Step 4: Simplify right side
    159,424.31x = 19,318,310,266.88
  5. Step 5: Solve for x
    x = 19,318,310,266.88/159,424.31
  6. Step 6: Final answer
    x = 121,175.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.