Home / 143,689.28-198,283.39-79,145.93

Finding the Fourth Proportional to 143,689.28, 198,283.39 and 79,145.93

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Solution

The fourth proportional to 143,689.28, 198,283.39 and 79,145.93 is: 109,217.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,689.28 : 198,283.39 = 79,145.93 : x
  2. Step 2: Convert to fraction form
    143,689.28/198,283.39 = 79,145.93/x
  3. Step 3: Cross multiply
    143,689.28x = 198,283.39 × 79,145.93
  4. Step 4: Simplify right side
    143,689.28x = 15,693,323,602.95
  5. Step 5: Solve for x
    x = 15,693,323,602.95/143,689.28
  6. Step 6: Final answer
    x = 109,217.08

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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.