Home / 140,141.12-193,387.57-79,710.43

Finding the Fourth Proportional to 140,141.12, 193,387.57 and 79,710.43

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Solution

The fourth proportional to 140,141.12, 193,387.57 and 79,710.43 is: 109,996.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,141.12 : 193,387.57 = 79,710.43 : x
  2. Step 2: Convert to fraction form
    140,141.12/193,387.57 = 79,710.43/x
  3. Step 3: Cross multiply
    140,141.12x = 193,387.57 × 79,710.43
  4. Step 4: Simplify right side
    140,141.12x = 15,415,006,041.21
  5. Step 5: Solve for x
    x = 15,415,006,041.21/140,141.12
  6. Step 6: Final answer
    x = 109,996.31

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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.