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Finding the Fourth Proportional to 151,570.50, 209,167.21 and 87,043.94

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Solution

The fourth proportional to 151,570.50, 209,167.21 and 87,043.94 is: 120,120.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,570.50 : 209,167.21 = 87,043.94 : x
  2. Step 2: Convert to fraction form
    151,570.50/209,167.21 = 87,043.94/x
  3. Step 3: Cross multiply
    151,570.50x = 209,167.21 × 87,043.94
  4. Step 4: Simplify right side
    151,570.50x = 18,206,738,077.21
  5. Step 5: Solve for x
    x = 18,206,738,077.21/151,570.50
  6. Step 6: Final answer
    x = 120,120.59

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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.