Home / 156,665.57-216,198.75-85,045.64

Finding the Fourth Proportional to 156,665.57, 216,198.75 and 85,045.64

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Solution

The fourth proportional to 156,665.57, 216,198.75 and 85,045.64 is: 117,363.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,665.57 : 216,198.75 = 85,045.64 : x
  2. Step 2: Convert to fraction form
    156,665.57/216,198.75 = 85,045.64/x
  3. Step 3: Cross multiply
    156,665.57x = 216,198.75 × 85,045.64
  4. Step 4: Simplify right side
    156,665.57x = 18,386,760,298.88
  5. Step 5: Solve for x
    x = 18,386,760,298.88/156,665.57
  6. Step 6: Final answer
    x = 117,363.13

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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.