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Finding the Fourth Proportional to 143,995.83, 198,712.51 and 79,465.56

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Solution

The fourth proportional to 143,995.83, 198,712.51 and 79,465.56 is: 109,661.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,995.83 : 198,712.51 = 79,465.56 : x
  2. Step 2: Convert to fraction form
    143,995.83/198,712.51 = 79,465.56/x
  3. Step 3: Cross multiply
    143,995.83x = 198,712.51 × 79,465.56
  4. Step 4: Simplify right side
    143,995.83x = 15,790,800,886.16
  5. Step 5: Solve for x
    x = 15,790,800,886.16/143,995.83
  6. Step 6: Final answer
    x = 109,661.52

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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.