Home / 162,123.12-243,187.92-87,305.04

Finding the Fourth Proportional to 162,123.12, 243,187.92 and 87,305.04

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Solution

The fourth proportional to 162,123.12, 243,187.92 and 87,305.04 is: 130,959.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,123.12 : 243,187.92 = 87,305.04 : x
  2. Step 2: Convert to fraction form
    162,123.12/243,187.92 = 87,305.04/x
  3. Step 3: Cross multiply
    162,123.12x = 243,187.92 × 87,305.04
  4. Step 4: Simplify right side
    162,123.12x = 21,231,531,083.12
  5. Step 5: Solve for x
    x = 21,231,531,083.12/162,123.12
  6. Step 6: Final answer
    x = 130,959.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.