Home / 140,039.55-193,221.39-79,605.45

Finding the Fourth Proportional to 140,039.55, 193,221.39 and 79,605.45

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Solution

The fourth proportional to 140,039.55, 193,221.39 and 79,605.45 is: 109,836.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,039.55 : 193,221.39 = 79,605.45 : x
  2. Step 2: Convert to fraction form
    140,039.55/193,221.39 = 79,605.45/x
  3. Step 3: Cross multiply
    140,039.55x = 193,221.39 × 79,605.45
  4. Step 4: Simplify right side
    140,039.55x = 15,381,475,700.58
  5. Step 5: Solve for x
    x = 15,381,475,700.58/140,039.55
  6. Step 6: Final answer
    x = 109,836.65

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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.