Home / 140,311.40-210,328.56-56,020.78

Finding the Fourth Proportional to 140,311.40, 210,328.56 and 56,020.78

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Solution

The fourth proportional to 140,311.40, 210,328.56 and 56,020.78 is: 83,975.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,311.40 : 210,328.56 = 56,020.78 : x
  2. Step 2: Convert to fraction form
    140,311.40/210,328.56 = 56,020.78/x
  3. Step 3: Cross multiply
    140,311.40x = 210,328.56 × 56,020.78
  4. Step 4: Simplify right side
    140,311.40x = 11,782,769,987.48
  5. Step 5: Solve for x
    x = 11,782,769,987.48/140,311.40
  6. Step 6: Final answer
    x = 83,975.86

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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.