Home / 143,272.40-214,908.60-137,205.20

Finding the Fourth Proportional to 143,272.40, 214,908.60 and 137,205.20

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Solution

The fourth proportional to 143,272.40, 214,908.60 and 137,205.20 is: 205,807.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,272.40 : 214,908.60 = 137,205.20 : x
  2. Step 2: Convert to fraction form
    143,272.40/214,908.60 = 137,205.20/x
  3. Step 3: Cross multiply
    143,272.40x = 214,908.60 × 137,205.20
  4. Step 4: Simplify right side
    143,272.40x = 29,486,577,444.72
  5. Step 5: Solve for x
    x = 29,486,577,444.72/143,272.40
  6. Step 6: Final answer
    x = 205,807.80

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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.