Home / 129,085.06-178,154.09-72,496.44

Finding the Fourth Proportional to 129,085.06, 178,154.09 and 72,496.44

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Solution

The fourth proportional to 129,085.06, 178,154.09 and 72,496.44 is: 100,054.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,085.06 : 178,154.09 = 72,496.44 : x
  2. Step 2: Convert to fraction form
    129,085.06/178,154.09 = 72,496.44/x
  3. Step 3: Cross multiply
    129,085.06x = 178,154.09 × 72,496.44
  4. Step 4: Simplify right side
    129,085.06x = 12,915,537,296.44
  5. Step 5: Solve for x
    x = 12,915,537,296.44/129,085.06
  6. Step 6: Final answer
    x = 100,054.47

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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.