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Finding the Fourth Proportional to 136,445.44, 188,281.92 and 100,655.32

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Solution

The fourth proportional to 136,445.44, 188,281.92 and 100,655.32 is: 138,894.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,445.44 : 188,281.92 = 100,655.32 : x
  2. Step 2: Convert to fraction form
    136,445.44/188,281.92 = 100,655.32/x
  3. Step 3: Cross multiply
    136,445.44x = 188,281.92 × 100,655.32
  4. Step 4: Simplify right side
    136,445.44x = 18,951,576,907.81
  5. Step 5: Solve for x
    x = 18,951,576,907.81/136,445.44
  6. Step 6: Final answer
    x = 138,894.91

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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.