Home / 129,207.88-178,302.72-71,846.92

Finding the Fourth Proportional to 129,207.88, 178,302.72 and 71,846.92

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Solution

The fourth proportional to 129,207.88, 178,302.72 and 71,846.92 is: 99,146.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,207.88 : 178,302.72 = 71,846.92 : x
  2. Step 2: Convert to fraction form
    129,207.88/178,302.72 = 71,846.92/x
  3. Step 3: Cross multiply
    129,207.88x = 178,302.72 × 71,846.92
  4. Step 4: Simplify right side
    129,207.88x = 12,810,501,259.62
  5. Step 5: Solve for x
    x = 12,810,501,259.62/129,207.88
  6. Step 6: Final answer
    x = 99,146.44

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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.