Home / 140,535.27-210,465.12-80,381.45

Finding the Fourth Proportional to 140,535.27, 210,465.12 and 80,381.45

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Solution

The fourth proportional to 140,535.27, 210,465.12 and 80,381.45 is: 120,378.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,535.27 : 210,465.12 = 80,381.45 : x
  2. Step 2: Convert to fraction form
    140,535.27/210,465.12 = 80,381.45/x
  3. Step 3: Cross multiply
    140,535.27x = 210,465.12 × 80,381.45
  4. Step 4: Simplify right side
    140,535.27x = 16,917,490,467.70
  5. Step 5: Solve for x
    x = 16,917,490,467.70/140,535.27
  6. Step 6: Final answer
    x = 120,378.97

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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.