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Finding the Fourth Proportional to 191,533.74, 287,200.85 and 71,491.97

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Solution

The fourth proportional to 191,533.74, 287,200.85 and 71,491.97 is: 107,200.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,533.74 : 287,200.85 = 71,491.97 : x
  2. Step 2: Convert to fraction form
    191,533.74/287,200.85 = 71,491.97/x
  3. Step 3: Cross multiply
    191,533.74x = 287,200.85 × 71,491.97
  4. Step 4: Simplify right side
    191,533.74x = 20,532,554,912.72
  5. Step 5: Solve for x
    x = 20,532,554,912.72/191,533.74
  6. Step 6: Final answer
    x = 107,200.72

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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.