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Finding the Fourth Proportional to 158,860.86, 219,106.50 and 107,912.87

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Solution

The fourth proportional to 158,860.86, 219,106.50 and 107,912.87 is: 148,837.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,860.86 : 219,106.50 = 107,912.87 : x
  2. Step 2: Convert to fraction form
    158,860.86/219,106.50 = 107,912.87/x
  3. Step 3: Cross multiply
    158,860.86x = 219,106.50 × 107,912.87
  4. Step 4: Simplify right side
    158,860.86x = 23,644,410,155.12
  5. Step 5: Solve for x
    x = 23,644,410,155.12/158,860.86
  6. Step 6: Final answer
    x = 148,837.23

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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.