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Finding the Fourth Proportional to 154,698.32, 213,475.56 and 87,626

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Solution

The fourth proportional to 154,698.32, 213,475.56 and 87,626 is: 120,919.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,698.32 : 213,475.56 = 87,626 : x
  2. Step 2: Convert to fraction form
    154,698.32/213,475.56 = 87,626/x
  3. Step 3: Cross multiply
    154,698.32x = 213,475.56 × 87,626
  4. Step 4: Simplify right side
    154,698.32x = 18,706,009,420.56
  5. Step 5: Solve for x
    x = 18,706,009,420.56/154,698.32
  6. Step 6: Final answer
    x = 120,919.28

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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.