Home / 131,420.86-197,147.68-51,448.50

Finding the Fourth Proportional to 131,420.86, 197,147.68 and 51,448.50

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Solution

The fourth proportional to 131,420.86, 197,147.68 and 51,448.50 is: 77,179.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,420.86 : 197,147.68 = 51,448.50 : x
  2. Step 2: Convert to fraction form
    131,420.86/197,147.68 = 51,448.50/x
  3. Step 3: Cross multiply
    131,420.86x = 197,147.68 × 51,448.50
  4. Step 4: Simplify right side
    131,420.86x = 10,142,952,285.86
  5. Step 5: Solve for x
    x = 10,142,952,285.86/131,420.86
  6. Step 6: Final answer
    x = 77,179.17

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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.