Home / 102,960.51-142,078.92-57,630.87

Finding the Fourth Proportional to 102,960.51, 142,078.92 and 57,630.87

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Solution

The fourth proportional to 102,960.51, 142,078.92 and 57,630.87 is: 79,526.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,960.51 : 142,078.92 = 57,630.87 : x
  2. Step 2: Convert to fraction form
    102,960.51/142,078.92 = 57,630.87/x
  3. Step 3: Cross multiply
    102,960.51x = 142,078.92 × 57,630.87
  4. Step 4: Simplify right side
    102,960.51x = 8,188,131,768.26
  5. Step 5: Solve for x
    x = 8,188,131,768.26/102,960.51
  6. Step 6: Final answer
    x = 79,526.92

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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.