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Finding the Fourth Proportional to 121,745.57, 168,025.58 and 70,061.61

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Solution

The fourth proportional to 121,745.57, 168,025.58 and 70,061.61 is: 96,694.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,745.57 : 168,025.58 = 70,061.61 : x
  2. Step 2: Convert to fraction form
    121,745.57/168,025.58 = 70,061.61/x
  3. Step 3: Cross multiply
    121,745.57x = 168,025.58 × 70,061.61
  4. Step 4: Simplify right side
    121,745.57x = 11,772,142,305.68
  5. Step 5: Solve for x
    x = 11,772,142,305.68/121,745.57
  6. Step 6: Final answer
    x = 96,694.63

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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.