Home / 126,820.40-190,000.20-103,319.60

Finding the Fourth Proportional to 126,820.40, 190,000.20 and 103,319.60

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Solution

The fourth proportional to 126,820.40, 190,000.20 and 103,319.60 is: 154,791.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,820.40 : 190,000.20 = 103,319.60 : x
  2. Step 2: Convert to fraction form
    126,820.40/190,000.20 = 103,319.60/x
  3. Step 3: Cross multiply
    126,820.40x = 190,000.20 × 103,319.60
  4. Step 4: Simplify right side
    126,820.40x = 19,630,744,663.92
  5. Step 5: Solve for x
    x = 19,630,744,663.92/126,820.40
  6. Step 6: Final answer
    x = 154,791.69

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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.