Home / 115,455.90-159,439.18-109,165.88

Finding the Fourth Proportional to 115,455.90, 159,439.18 and 109,165.88

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Solution

The fourth proportional to 115,455.90, 159,439.18 and 109,165.88 is: 150,752.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,455.90 : 159,439.18 = 109,165.88 : x
  2. Step 2: Convert to fraction form
    115,455.90/159,439.18 = 109,165.88/x
  3. Step 3: Cross multiply
    115,455.90x = 159,439.18 × 109,165.88
  4. Step 4: Simplify right side
    115,455.90x = 17,405,318,721.55
  5. Step 5: Solve for x
    x = 17,405,318,721.55/115,455.90
  6. Step 6: Final answer
    x = 150,752.96

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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.