Home / 124,960.20-187,139.88-71,490.12

Finding the Fourth Proportional to 124,960.20, 187,139.88 and 71,490.12

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Solution

The fourth proportional to 124,960.20, 187,139.88 and 71,490.12 is: 107,063.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,960.20 : 187,139.88 = 71,490.12 : x
  2. Step 2: Convert to fraction form
    124,960.20/187,139.88 = 71,490.12/x
  3. Step 3: Cross multiply
    124,960.20x = 187,139.88 × 71,490.12
  4. Step 4: Simplify right side
    124,960.20x = 13,378,652,477.99
  5. Step 5: Solve for x
    x = 13,378,652,477.99/124,960.20
  6. Step 6: Final answer
    x = 107,063.31

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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.