Home / 140,908.20-211,535.10-139,871.40

Finding the Fourth Proportional to 140,908.20, 211,535.10 and 139,871.40

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Solution

The fourth proportional to 140,908.20, 211,535.10 and 139,871.40 is: 209,978.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,908.20 : 211,535.10 = 139,871.40 : x
  2. Step 2: Convert to fraction form
    140,908.20/211,535.10 = 139,871.40/x
  3. Step 3: Cross multiply
    140,908.20x = 211,535.10 × 139,871.40
  4. Step 4: Simplify right side
    140,908.20x = 29,587,710,586.14
  5. Step 5: Solve for x
    x = 29,587,710,586.14/140,908.20
  6. Step 6: Final answer
    x = 209,978.63

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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.