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Finding the Fourth Proportional to 144,000.76, 198,719.64 and 79,470.59

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Solution

The fourth proportional to 144,000.76, 198,719.64 and 79,470.59 is: 109,668.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,000.76 : 198,719.64 = 79,470.59 : x
  2. Step 2: Convert to fraction form
    144,000.76/198,719.64 = 79,470.59/x
  3. Step 3: Cross multiply
    144,000.76x = 198,719.64 × 79,470.59
  4. Step 4: Simplify right side
    144,000.76x = 15,792,367,035.39
  5. Step 5: Solve for x
    x = 15,792,367,035.39/144,000.76
  6. Step 6: Final answer
    x = 109,668.64

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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.