Home / 91,423.85-126,164.00-51,137.15

Finding the Fourth Proportional to 91,423.85, 126,164.00 and 51,137.15

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Solution

The fourth proportional to 91,423.85, 126,164.00 and 51,137.15 is: 70,568.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,423.85 : 126,164.00 = 51,137.15 : x
  2. Step 2: Convert to fraction form
    91,423.85/126,164.00 = 51,137.15/x
  3. Step 3: Cross multiply
    91,423.85x = 126,164.00 × 51,137.15
  4. Step 4: Simplify right side
    91,423.85x = 6,451,666,889.62
  5. Step 5: Solve for x
    x = 6,451,666,889.62/91,423.85
  6. Step 6: Final answer
    x = 70,568.75

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Double scale
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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.