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Finding the Fourth Proportional to 191,571.70, 287,357.55 and 73,246.90

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Solution

The fourth proportional to 191,571.70, 287,357.55 and 73,246.90 is: 109,870.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,571.70 : 287,357.55 = 73,246.90 : x
  2. Step 2: Convert to fraction form
    191,571.70/287,357.55 = 73,246.90/x
  3. Step 3: Cross multiply
    191,571.70x = 287,357.55 × 73,246.90
  4. Step 4: Simplify right side
    191,571.70x = 21,048,049,729.10
  5. Step 5: Solve for x
    x = 21,048,049,729.10/191,571.70
  6. Step 6: Final answer
    x = 109,870.35

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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.