Home / 129,505.33-194,258.47-66,290.95

Finding the Fourth Proportional to 129,505.33, 194,258.47 and 66,290.95

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Solution

The fourth proportional to 129,505.33, 194,258.47 and 66,290.95 is: 99,436.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,505.33 : 194,258.47 = 66,290.95 : x
  2. Step 2: Convert to fraction form
    129,505.33/194,258.47 = 66,290.95/x
  3. Step 3: Cross multiply
    129,505.33x = 194,258.47 × 66,290.95
  4. Step 4: Simplify right side
    129,505.33x = 12,877,578,521.85
  5. Step 5: Solve for x
    x = 12,877,578,521.85/129,505.33
  6. Step 6: Final answer
    x = 99,436.67

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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.