Home / 144,275.39-199,100.66-78,865.55

Finding the Fourth Proportional to 144,275.39, 199,100.66 and 78,865.55

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Solution

The fourth proportional to 144,275.39, 199,100.66 and 78,865.55 is: 108,834.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,275.39 : 199,100.66 = 78,865.55 : x
  2. Step 2: Convert to fraction form
    144,275.39/199,100.66 = 78,865.55/x
  3. Step 3: Cross multiply
    144,275.39x = 199,100.66 × 78,865.55
  4. Step 4: Simplify right side
    144,275.39x = 15,702,183,133.94
  5. Step 5: Solve for x
    x = 15,702,183,133.94/144,275.39
  6. Step 6: Final answer
    x = 108,834.80

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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.