Home / 83,136.08-114,494.76-77,799.92

Finding the Fourth Proportional to 83,136.08, 114,494.76 and 77,799.92

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Solution

The fourth proportional to 83,136.08, 114,494.76 and 77,799.92 is: 107,145.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,136.08 : 114,494.76 = 77,799.92 : x
  2. Step 2: Convert to fraction form
    83,136.08/114,494.76 = 77,799.92/x
  3. Step 3: Cross multiply
    83,136.08x = 114,494.76 × 77,799.92
  4. Step 4: Simplify right side
    83,136.08x = 8,907,683,168.42
  5. Step 5: Solve for x
    x = 8,907,683,168.42/83,136.08
  6. Step 6: Final answer
    x = 107,145.82

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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.