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Finding the Fourth Proportional to 143,503.92, 198,044.88 and 79,841.86

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Solution

The fourth proportional to 143,503.92, 198,044.88 and 79,841.86 is: 110,187.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,503.92 : 198,044.88 = 79,841.86 : x
  2. Step 2: Convert to fraction form
    143,503.92/198,044.88 = 79,841.86/x
  3. Step 3: Cross multiply
    143,503.92x = 198,044.88 × 79,841.86
  4. Step 4: Simplify right side
    143,503.92x = 15,812,271,582.68
  5. Step 5: Solve for x
    x = 15,812,271,582.68/143,503.92
  6. Step 6: Final answer
    x = 110,187.04

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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.