Home / 156,986.80-235,480.20-143,208.70

Finding the Fourth Proportional to 156,986.80, 235,480.20 and 143,208.70

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Solution

The fourth proportional to 156,986.80, 235,480.20 and 143,208.70 is: 214,813.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,986.80 : 235,480.20 = 143,208.70 : x
  2. Step 2: Convert to fraction form
    156,986.80/235,480.20 = 143,208.70/x
  3. Step 3: Cross multiply
    156,986.80x = 235,480.20 × 143,208.70
  4. Step 4: Simplify right side
    156,986.80x = 33,722,813,317.74
  5. Step 5: Solve for x
    x = 33,722,813,317.74/156,986.80
  6. Step 6: Final answer
    x = 214,813.05

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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.