Home / 139,855.35-193,000.76-76,193.61

Finding the Fourth Proportional to 139,855.35, 193,000.76 and 76,193.61

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Solution

The fourth proportional to 139,855.35, 193,000.76 and 76,193.61 is: 105,147.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,855.35 : 193,000.76 = 76,193.61 : x
  2. Step 2: Convert to fraction form
    139,855.35/193,000.76 = 76,193.61/x
  3. Step 3: Cross multiply
    139,855.35x = 193,000.76 × 76,193.61
  4. Step 4: Simplify right side
    139,855.35x = 14,705,424,256.18
  5. Step 5: Solve for x
    x = 14,705,424,256.18/139,855.35
  6. Step 6: Final answer
    x = 105,147.38

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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.