Home / 156,665.88-216,198.38-85,045.39

Finding the Fourth Proportional to 156,665.88, 216,198.38 and 85,045.39

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Solution

The fourth proportional to 156,665.88, 216,198.38 and 85,045.39 is: 117,362.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,665.88 : 216,198.38 = 85,045.39 : x
  2. Step 2: Convert to fraction form
    156,665.88/216,198.38 = 85,045.39/x
  3. Step 3: Cross multiply
    156,665.88x = 216,198.38 × 85,045.39
  4. Step 4: Simplify right side
    156,665.88x = 18,386,675,216.59
  5. Step 5: Solve for x
    x = 18,386,675,216.59/156,665.88
  6. Step 6: Final answer
    x = 117,362.35

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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.