Home / 129,206.02-178,304.97-72,616.90

Finding the Fourth Proportional to 129,206.02, 178,304.97 and 72,616.90

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Solution

The fourth proportional to 129,206.02, 178,304.97 and 72,616.90 is: 100,211.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,206.02 : 178,304.97 = 72,616.90 : x
  2. Step 2: Convert to fraction form
    129,206.02/178,304.97 = 72,616.90/x
  3. Step 3: Cross multiply
    129,206.02x = 178,304.97 × 72,616.90
  4. Step 4: Simplify right side
    129,206.02x = 12,947,954,175.99
  5. Step 5: Solve for x
    x = 12,947,954,175.99/129,206.02
  6. Step 6: Final answer
    x = 100,211.69

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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.