Home / 129,601.22-178,853.47-75,881.21

Finding the Fourth Proportional to 129,601.22, 178,853.47 and 75,881.21

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Solution

The fourth proportional to 129,601.22, 178,853.47 and 75,881.21 is: 104,718.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,601.22 : 178,853.47 = 75,881.21 : x
  2. Step 2: Convert to fraction form
    129,601.22/178,853.47 = 75,881.21/x
  3. Step 3: Cross multiply
    129,601.22x = 178,853.47 × 75,881.21
  4. Step 4: Simplify right side
    129,601.22x = 13,571,616,632.33
  5. Step 5: Solve for x
    x = 13,571,616,632.33/129,601.22
  6. Step 6: Final answer
    x = 104,718.28

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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.