Home / 129,196.26-178,287.54-71,832.63

Finding the Fourth Proportional to 129,196.26, 178,287.54 and 71,832.63

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Solution

The fourth proportional to 129,196.26, 178,287.54 and 71,832.63 is: 99,127.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,196.26 : 178,287.54 = 71,832.63 : x
  2. Step 2: Convert to fraction form
    129,196.26/178,287.54 = 71,832.63/x
  3. Step 3: Cross multiply
    129,196.26x = 178,287.54 × 71,832.63
  4. Step 4: Simplify right side
    129,196.26x = 12,806,862,894.43
  5. Step 5: Solve for x
    x = 12,806,862,894.43/129,196.26
  6. Step 6: Final answer
    x = 99,127.20

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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.