Home / 143,124.31-214,354.26-138,142.20

Finding the Fourth Proportional to 143,124.31, 214,354.26 and 138,142.20

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Solution

The fourth proportional to 143,124.31, 214,354.26 and 138,142.20 is: 206,892.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,124.31 : 214,354.26 = 138,142.20 : x
  2. Step 2: Convert to fraction form
    143,124.31/214,354.26 = 138,142.20/x
  3. Step 3: Cross multiply
    143,124.31x = 214,354.26 × 138,142.20
  4. Step 4: Simplify right side
    143,124.31x = 29,611,369,055.77
  5. Step 5: Solve for x
    x = 29,611,369,055.77/143,124.31
  6. Step 6: Final answer
    x = 206,892.66

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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.