Home / 156,895.10-216,517.43-85,275.10

Finding the Fourth Proportional to 156,895.10, 216,517.43 and 85,275.10

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Solution

The fourth proportional to 156,895.10, 216,517.43 and 85,275.10 is: 117,680.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,895.10 : 216,517.43 = 85,275.10 : x
  2. Step 2: Convert to fraction form
    156,895.10/216,517.43 = 85,275.10/x
  3. Step 3: Cross multiply
    156,895.10x = 216,517.43 × 85,275.10
  4. Step 4: Simplify right side
    156,895.10x = 18,463,545,494.99
  5. Step 5: Solve for x
    x = 18,463,545,494.99/156,895.10
  6. Step 6: Final answer
    x = 117,680.83

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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.