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Finding the Fourth Proportional to 143,482.59, 214,927.43 and 84,139.56

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Solution

The fourth proportional to 143,482.59, 214,927.43 and 84,139.56 is: 126,035.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,482.59 : 214,927.43 = 84,139.56 : x
  2. Step 2: Convert to fraction form
    143,482.59/214,927.43 = 84,139.56/x
  3. Step 3: Cross multiply
    143,482.59x = 214,927.43 × 84,139.56
  4. Step 4: Simplify right side
    143,482.59x = 18,083,898,971.43
  5. Step 5: Solve for x
    x = 18,083,898,971.43/143,482.59
  6. Step 6: Final answer
    x = 126,035.49

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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.