Home / 119,904.10-180,123.45-100,221.10

Finding the Fourth Proportional to 119,904.10, 180,123.45 and 100,221.10

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Solution

The fourth proportional to 119,904.10, 180,123.45 and 100,221.10 is: 150,555.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,904.10 : 180,123.45 = 100,221.10 : x
  2. Step 2: Convert to fraction form
    119,904.10/180,123.45 = 100,221.10/x
  3. Step 3: Cross multiply
    119,904.10x = 180,123.45 × 100,221.10
  4. Step 4: Simplify right side
    119,904.10x = 18,052,170,294.80
  5. Step 5: Solve for x
    x = 18,052,170,294.80/119,904.10
  6. Step 6: Final answer
    x = 150,555.07

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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.