Home / 156,686.45-216,227.30-85,066.48

Finding the Fourth Proportional to 156,686.45, 216,227.30 and 85,066.48

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Solution

The fourth proportional to 156,686.45, 216,227.30 and 85,066.48 is: 117,391.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,686.45 : 216,227.30 = 85,066.48 : x
  2. Step 2: Convert to fraction form
    156,686.45/216,227.30 = 85,066.48/x
  3. Step 3: Cross multiply
    156,686.45x = 216,227.30 × 85,066.48
  4. Step 4: Simplify right side
    156,686.45x = 18,393,694,766.97
  5. Step 5: Solve for x
    x = 18,393,694,766.97/156,686.45
  6. Step 6: Final answer
    x = 117,391.74

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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.