Home / 142,936.55-214,231.75-79,689.51

Finding the Fourth Proportional to 142,936.55, 214,231.75 and 79,689.51

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Solution

The fourth proportional to 142,936.55, 214,231.75 and 79,689.51 is: 119,437.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,936.55 : 214,231.75 = 79,689.51 : x
  2. Step 2: Convert to fraction form
    142,936.55/214,231.75 = 79,689.51/x
  3. Step 3: Cross multiply
    142,936.55x = 214,231.75 × 79,689.51
  4. Step 4: Simplify right side
    142,936.55x = 17,072,022,984.72
  5. Step 5: Solve for x
    x = 17,072,022,984.72/142,936.55
  6. Step 6: Final answer
    x = 119,437.77

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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.