Home / 140,042.76-210,157.56-72,636.92

Finding the Fourth Proportional to 140,042.76, 210,157.56 and 72,636.92

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Solution

The fourth proportional to 140,042.76, 210,157.56 and 72,636.92 is: 109,003.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,042.76 : 210,157.56 = 72,636.92 : x
  2. Step 2: Convert to fraction form
    140,042.76/210,157.56 = 72,636.92/x
  3. Step 3: Cross multiply
    140,042.76x = 210,157.56 × 72,636.92
  4. Step 4: Simplify right side
    140,042.76x = 15,265,197,873.12
  5. Step 5: Solve for x
    x = 15,265,197,873.12/140,042.76
  6. Step 6: Final answer
    x = 109,003.83

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1.5x scale

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.