Home / 156,790.13-216,374.31-85,170.15

Finding the Fourth Proportional to 156,790.13, 216,374.31 and 85,170.15

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Solution

The fourth proportional to 156,790.13, 216,374.31 and 85,170.15 is: 117,536.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,790.13 : 216,374.31 = 85,170.15 : x
  2. Step 2: Convert to fraction form
    156,790.13/216,374.31 = 85,170.15/x
  3. Step 3: Cross multiply
    156,790.13x = 216,374.31 × 85,170.15
  4. Step 4: Simplify right side
    156,790.13x = 18,428,632,438.85
  5. Step 5: Solve for x
    x = 18,428,632,438.85/156,790.13
  6. Step 6: Final answer
    x = 117,536.95

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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.