Home / 140,136.81-193,351.64-79,697.70

Finding the Fourth Proportional to 140,136.81, 193,351.64 and 79,697.70

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Solution

The fourth proportional to 140,136.81, 193,351.64 and 79,697.70 is: 109,961.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,136.81 : 193,351.64 = 79,697.70 : x
  2. Step 2: Convert to fraction form
    140,136.81/193,351.64 = 79,697.70/x
  3. Step 3: Cross multiply
    140,136.81x = 193,351.64 × 79,697.70
  4. Step 4: Simplify right side
    140,136.81x = 15,409,680,841.46
  5. Step 5: Solve for x
    x = 15,409,680,841.46/140,136.81
  6. Step 6: Final answer
    x = 109,961.69

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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.