Home / 129,450.12-193,926.40-79,384.22

Finding the Fourth Proportional to 129,450.12, 193,926.40 and 79,384.22

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Solution

The fourth proportional to 129,450.12, 193,926.40 and 79,384.22 is: 118,923.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,450.12 : 193,926.40 = 79,384.22 : x
  2. Step 2: Convert to fraction form
    129,450.12/193,926.40 = 79,384.22/x
  3. Step 3: Cross multiply
    129,450.12x = 193,926.40 × 79,384.22
  4. Step 4: Simplify right side
    129,450.12x = 15,394,696,001.41
  5. Step 5: Solve for x
    x = 15,394,696,001.41/129,450.12
  6. Step 6: Final answer
    x = 118,923.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.