Home / 131,405.90-197,140.17-42,659.60

Finding the Fourth Proportional to 131,405.90, 197,140.17 and 42,659.60

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Solution

The fourth proportional to 131,405.90, 197,140.17 and 42,659.60 is: 63,999.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,405.90 : 197,140.17 = 42,659.60 : x
  2. Step 2: Convert to fraction form
    131,405.90/197,140.17 = 42,659.60/x
  3. Step 3: Cross multiply
    131,405.90x = 197,140.17 × 42,659.60
  4. Step 4: Simplify right side
    131,405.90x = 8,409,920,796.13
  5. Step 5: Solve for x
    x = 8,409,920,796.13/131,405.90
  6. Step 6: Final answer
    x = 63,999.57

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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.