Home / 131,140-196,743.21-37,645.75

Finding the Fourth Proportional to 131,140, 196,743.21 and 37,645.75

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Solution

The fourth proportional to 131,140, 196,743.21 and 37,645.75 is: 56,478.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,140 : 196,743.21 = 37,645.75 : x
  2. Step 2: Convert to fraction form
    131,140/196,743.21 = 37,645.75/x
  3. Step 3: Cross multiply
    131,140x = 196,743.21 × 37,645.75
  4. Step 4: Simplify right side
    131,140x = 7,406,545,697.86
  5. Step 5: Solve for x
    x = 7,406,545,697.86/131,140
  6. Step 6: Final answer
    x = 56,478.16

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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.