Home / 139,623.75-192,666.20-79,175.07

Finding the Fourth Proportional to 139,623.75, 192,666.20 and 79,175.07

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Solution

The fourth proportional to 139,623.75, 192,666.20 and 79,175.07 is: 109,253.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,623.75 : 192,666.20 = 79,175.07 : x
  2. Step 2: Convert to fraction form
    139,623.75/192,666.20 = 79,175.07/x
  3. Step 3: Cross multiply
    139,623.75x = 192,666.20 × 79,175.07
  4. Step 4: Simplify right side
    139,623.75x = 15,254,359,475.76
  5. Step 5: Solve for x
    x = 15,254,359,475.76/139,623.75
  6. Step 6: Final answer
    x = 109,253.33

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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.