Home / 122,138.10-168,560.94-68,422.38

Finding the Fourth Proportional to 122,138.10, 168,560.94 and 68,422.38

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Solution

The fourth proportional to 122,138.10, 168,560.94 and 68,422.38 is: 94,428.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,138.10 : 168,560.94 = 68,422.38 : x
  2. Step 2: Convert to fraction form
    122,138.10/168,560.94 = 68,422.38/x
  3. Step 3: Cross multiply
    122,138.10x = 168,560.94 × 68,422.38
  4. Step 4: Simplify right side
    122,138.10x = 11,533,340,689.84
  5. Step 5: Solve for x
    x = 11,533,340,689.84/122,138.10
  6. Step 6: Final answer
    x = 94,428.69

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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.