Home / 122,127.13-168,537.21-71,138.56

Finding the Fourth Proportional to 122,127.13, 168,537.21 and 71,138.56

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Solution

The fourth proportional to 122,127.13, 168,537.21 and 71,138.56 is: 98,172.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,127.13 : 168,537.21 = 71,138.56 : x
  2. Step 2: Convert to fraction form
    122,127.13/168,537.21 = 71,138.56/x
  3. Step 3: Cross multiply
    122,127.13x = 168,537.21 × 71,138.56
  4. Step 4: Simplify right side
    122,127.13x = 11,989,494,425.82
  5. Step 5: Solve for x
    x = 11,989,494,425.82/122,127.13
  6. Step 6: Final answer
    x = 98,172.24

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1.5x scale

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.