Home / 128,984.50-193,476.72-84,601

Finding the Fourth Proportional to 128,984.50, 193,476.72 and 84,601

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Solution

The fourth proportional to 128,984.50, 193,476.72 and 84,601 is: 126,901.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,984.50 : 193,476.72 = 84,601 : x
  2. Step 2: Convert to fraction form
    128,984.50/193,476.72 = 84,601/x
  3. Step 3: Cross multiply
    128,984.50x = 193,476.72 × 84,601
  4. Step 4: Simplify right side
    128,984.50x = 16,368,323,988.72
  5. Step 5: Solve for x
    x = 16,368,323,988.72/128,984.50
  6. Step 6: Final answer
    x = 126,901.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.