Home / 191,721.48-287,474.44-131,820.36

Finding the Fourth Proportional to 191,721.48, 287,474.44 and 131,820.36

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Solution

The fourth proportional to 191,721.48, 287,474.44 and 131,820.36 is: 197,656.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,721.48 : 287,474.44 = 131,820.36 : x
  2. Step 2: Convert to fraction form
    191,721.48/287,474.44 = 131,820.36/x
  3. Step 3: Cross multiply
    191,721.48x = 287,474.44 × 131,820.36
  4. Step 4: Simplify right side
    191,721.48x = 37,894,984,171.60
  5. Step 5: Solve for x
    x = 37,894,984,171.60/191,721.48
  6. Step 6: Final answer
    x = 197,656.43

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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.