Home / 91,930.18-126,878.41-85,926.86

Finding the Fourth Proportional to 91,930.18, 126,878.41 and 85,926.86

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Solution

The fourth proportional to 91,930.18, 126,878.41 and 85,926.86 is: 118,592.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,930.18 : 126,878.41 = 85,926.86 : x
  2. Step 2: Convert to fraction form
    91,930.18/126,878.41 = 85,926.86/x
  3. Step 3: Cross multiply
    91,930.18x = 126,878.41 × 85,926.86
  4. Step 4: Simplify right side
    91,930.18x = 10,902,263,373.09
  5. Step 5: Solve for x
    x = 10,902,263,373.09/91,930.18
  6. Step 6: Final answer
    x = 118,592.87

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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.