Home / 140,269.93-209,979.34-90,385.67

Finding the Fourth Proportional to 140,269.93, 209,979.34 and 90,385.67

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Solution

The fourth proportional to 140,269.93, 209,979.34 and 90,385.67 is: 135,304.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,269.93 : 209,979.34 = 90,385.67 : x
  2. Step 2: Convert to fraction form
    140,269.93/209,979.34 = 90,385.67/x
  3. Step 3: Cross multiply
    140,269.93x = 209,979.34 × 90,385.67
  4. Step 4: Simplify right side
    140,269.93x = 18,979,123,631.04
  5. Step 5: Solve for x
    x = 18,979,123,631.04/140,269.93
  6. Step 6: Final answer
    x = 135,304.29

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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.