Home / 142,890.27-197,185.64-79,227.51

Finding the Fourth Proportional to 142,890.27, 197,185.64 and 79,227.51

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Solution

The fourth proportional to 142,890.27, 197,185.64 and 79,227.51 is: 109,332.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,890.27 : 197,185.64 = 79,227.51 : x
  2. Step 2: Convert to fraction form
    142,890.27/197,185.64 = 79,227.51/x
  3. Step 3: Cross multiply
    142,890.27x = 197,185.64 × 79,227.51
  4. Step 4: Simplify right side
    142,890.27x = 15,622,526,868.82
  5. Step 5: Solve for x
    x = 15,622,526,868.82/142,890.27
  6. Step 6: Final answer
    x = 109,332.34

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.