Home / 129,052.07-178,014.63-81,222.38

Finding the Fourth Proportional to 129,052.07, 178,014.63 and 81,222.38

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Solution

The fourth proportional to 129,052.07, 178,014.63 and 81,222.38 is: 112,038.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,052.07 : 178,014.63 = 81,222.38 : x
  2. Step 2: Convert to fraction form
    129,052.07/178,014.63 = 81,222.38/x
  3. Step 3: Cross multiply
    129,052.07x = 178,014.63 × 81,222.38
  4. Step 4: Simplify right side
    129,052.07x = 14,458,770,627.23
  5. Step 5: Solve for x
    x = 14,458,770,627.23/129,052.07
  6. Step 6: Final answer
    x = 112,038.27

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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.