Home / 129,429.40-194,143.96-40,690.66

Finding the Fourth Proportional to 129,429.40, 194,143.96 and 40,690.66

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Solution

The fourth proportional to 129,429.40, 194,143.96 and 40,690.66 is: 61,035.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,429.40 : 194,143.96 = 40,690.66 : x
  2. Step 2: Convert to fraction form
    129,429.40/194,143.96 = 40,690.66/x
  3. Step 3: Cross multiply
    129,429.40x = 194,143.96 × 40,690.66
  4. Step 4: Simplify right side
    129,429.40x = 7,899,845,867.41
  5. Step 5: Solve for x
    x = 7,899,845,867.41/129,429.40
  6. Step 6: Final answer
    x = 61,035.95

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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.