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Finding the Fourth Proportional to 144,648.60, 199,613.75 and 80,987.46

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Solution

The fourth proportional to 144,648.60, 199,613.75 and 80,987.46 is: 111,761.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,648.60 : 199,613.75 = 80,987.46 : x
  2. Step 2: Convert to fraction form
    144,648.60/199,613.75 = 80,987.46/x
  3. Step 3: Cross multiply
    144,648.60x = 199,613.75 × 80,987.46
  4. Step 4: Simplify right side
    144,648.60x = 16,166,209,440.09
  5. Step 5: Solve for x
    x = 16,166,209,440.09/144,648.60
  6. Step 6: Final answer
    x = 111,761.95

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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.