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Finding the Fourth Proportional to 145,180.40, 217,764.48 and 45,339.80

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Solution

The fourth proportional to 145,180.40, 217,764.48 and 45,339.80 is: 68,007.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,180.40 : 217,764.48 = 45,339.80 : x
  2. Step 2: Convert to fraction form
    145,180.40/217,764.48 = 45,339.80/x
  3. Step 3: Cross multiply
    145,180.40x = 217,764.48 × 45,339.80
  4. Step 4: Simplify right side
    145,180.40x = 9,873,397,970.30
  5. Step 5: Solve for x
    x = 9,873,397,970.30/145,180.40
  6. Step 6: Final answer
    x = 68,007.79

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1.5x scale

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.