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Finding the Fourth Proportional to 115,149.90, 172,724.84 and 44,980

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Solution

The fourth proportional to 115,149.90, 172,724.84 and 44,980 is: 67,470.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,149.90 : 172,724.84 = 44,980 : x
  2. Step 2: Convert to fraction form
    115,149.90/172,724.84 = 44,980/x
  3. Step 3: Cross multiply
    115,149.90x = 172,724.84 × 44,980
  4. Step 4: Simplify right side
    115,149.90x = 7,769,163,303.20
  5. Step 5: Solve for x
    x = 7,769,163,303.20/115,149.90
  6. Step 6: Final answer
    x = 67,470.00

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.