Home / 129,054.26-178,022.71-81,224.57

Finding the Fourth Proportional to 129,054.26, 178,022.71 and 81,224.57

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Solution

The fourth proportional to 129,054.26, 178,022.71 and 81,224.57 is: 112,044.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,054.26 : 178,022.71 = 81,224.57 : x
  2. Step 2: Convert to fraction form
    129,054.26/178,022.71 = 81,224.57/x
  3. Step 3: Cross multiply
    129,054.26x = 178,022.71 × 81,224.57
  4. Step 4: Simplify right side
    129,054.26x = 14,459,818,616.57
  5. Step 5: Solve for x
    x = 14,459,818,616.57/129,054.26
  6. Step 6: Final answer
    x = 112,044.49

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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.