Home / 139,419.09-192,397.97-75,756.89

Finding the Fourth Proportional to 139,419.09, 192,397.97 and 75,756.89

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Solution

The fourth proportional to 139,419.09, 192,397.97 and 75,756.89 is: 104,544.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,419.09 : 192,397.97 = 75,756.89 : x
  2. Step 2: Convert to fraction form
    139,419.09/192,397.97 = 75,756.89/x
  3. Step 3: Cross multiply
    139,419.09x = 192,397.97 × 75,756.89
  4. Step 4: Simplify right side
    139,419.09x = 14,575,470,508.74
  5. Step 5: Solve for x
    x = 14,575,470,508.74/139,419.09
  6. Step 6: Final answer
    x = 104,544.30

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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.