Home / 122,113.40-168,511.50-68,397.56

Finding the Fourth Proportional to 122,113.40, 168,511.50 and 68,397.56

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Solution

The fourth proportional to 122,113.40, 168,511.50 and 68,397.56 is: 94,385.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,113.40 : 168,511.50 = 68,397.56 : x
  2. Step 2: Convert to fraction form
    122,113.40/168,511.50 = 68,397.56/x
  3. Step 3: Cross multiply
    122,113.40x = 168,511.50 × 68,397.56
  4. Step 4: Simplify right side
    122,113.40x = 11,525,775,431.94
  5. Step 5: Solve for x
    x = 11,525,775,431.94/122,113.40
  6. Step 6: Final answer
    x = 94,385.84

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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.