Home / 156,989.40-235,484.10-143,211.30

Finding the Fourth Proportional to 156,989.40, 235,484.10 and 143,211.30

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Solution

The fourth proportional to 156,989.40, 235,484.10 and 143,211.30 is: 214,816.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,989.40 : 235,484.10 = 143,211.30 : x
  2. Step 2: Convert to fraction form
    156,989.40/235,484.10 = 143,211.30/x
  3. Step 3: Cross multiply
    156,989.40x = 235,484.10 × 143,211.30
  4. Step 4: Simplify right side
    156,989.40x = 33,723,984,090.33
  5. Step 5: Solve for x
    x = 33,723,984,090.33/156,989.40
  6. Step 6: Final answer
    x = 214,816.95

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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.