Home / 129,836.36-194,752.50-66,620

Finding the Fourth Proportional to 129,836.36, 194,752.50 and 66,620

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Solution

The fourth proportional to 129,836.36, 194,752.50 and 66,620 is: 99,928.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,836.36 : 194,752.50 = 66,620 : x
  2. Step 2: Convert to fraction form
    129,836.36/194,752.50 = 66,620/x
  3. Step 3: Cross multiply
    129,836.36x = 194,752.50 × 66,620
  4. Step 4: Simplify right side
    129,836.36x = 12,974,411,550
  5. Step 5: Solve for x
    x = 12,974,411,550/129,836.36
  6. Step 6: Final answer
    x = 99,928.95

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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.