Home / 140,378.38-210,507.62-81,254.86

Finding the Fourth Proportional to 140,378.38, 210,507.62 and 81,254.86

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Solution

The fourth proportional to 140,378.38, 210,507.62 and 81,254.86 is: 121,847.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,378.38 : 210,507.62 = 81,254.86 : x
  2. Step 2: Convert to fraction form
    140,378.38/210,507.62 = 81,254.86/x
  3. Step 3: Cross multiply
    140,378.38x = 210,507.62 × 81,254.86
  4. Step 4: Simplify right side
    140,378.38x = 17,104,766,139.50
  5. Step 5: Solve for x
    x = 17,104,766,139.50/140,378.38
  6. Step 6: Final answer
    x = 121,847.59

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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.