Home / 156,123.54-215,450.10-84,502.98

Finding the Fourth Proportional to 156,123.54, 215,450.10 and 84,502.98

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Solution

The fourth proportional to 156,123.54, 215,450.10 and 84,502.98 is: 116,613.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,123.54 : 215,450.10 = 84,502.98 : x
  2. Step 2: Convert to fraction form
    156,123.54/215,450.10 = 84,502.98/x
  3. Step 3: Cross multiply
    156,123.54x = 215,450.10 × 84,502.98
  4. Step 4: Simplify right side
    156,123.54x = 18,206,175,491.30
  5. Step 5: Solve for x
    x = 18,206,175,491.30/156,123.54
  6. Step 6: Final answer
    x = 116,613.90

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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.