Home / 140,540.20-210,810.30-70,556.20

Finding the Fourth Proportional to 140,540.20, 210,810.30 and 70,556.20

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Solution

The fourth proportional to 140,540.20, 210,810.30 and 70,556.20 is: 105,834.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,540.20 : 210,810.30 = 70,556.20 : x
  2. Step 2: Convert to fraction form
    140,540.20/210,810.30 = 70,556.20/x
  3. Step 3: Cross multiply
    140,540.20x = 210,810.30 × 70,556.20
  4. Step 4: Simplify right side
    140,540.20x = 14,873,973,688.86
  5. Step 5: Solve for x
    x = 14,873,973,688.86/140,540.20
  6. Step 6: Final answer
    x = 105,834.30

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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.