Home / 156,278.12-215,664.82-84,658.12

Finding the Fourth Proportional to 156,278.12, 215,664.82 and 84,658.12

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Solution

The fourth proportional to 156,278.12, 215,664.82 and 84,658.12 is: 116,828.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,278.12 : 215,664.82 = 84,658.12 : x
  2. Step 2: Convert to fraction form
    156,278.12/215,664.82 = 84,658.12/x
  3. Step 3: Cross multiply
    156,278.12x = 215,664.82 × 84,658.12
  4. Step 4: Simplify right side
    156,278.12x = 18,257,778,211.34
  5. Step 5: Solve for x
    x = 18,257,778,211.34/156,278.12
  6. Step 6: Final answer
    x = 116,828.76

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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.