Home / 143,665.08-198,248.40-83,230.80

Finding the Fourth Proportional to 143,665.08, 198,248.40 and 83,230.80

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Solution

The fourth proportional to 143,665.08, 198,248.40 and 83,230.80 is: 114,853.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,665.08 : 198,248.40 = 83,230.80 : x
  2. Step 2: Convert to fraction form
    143,665.08/198,248.40 = 83,230.80/x
  3. Step 3: Cross multiply
    143,665.08x = 198,248.40 × 83,230.80
  4. Step 4: Simplify right side
    143,665.08x = 16,500,372,930.72
  5. Step 5: Solve for x
    x = 16,500,372,930.72/143,665.08
  6. Step 6: Final answer
    x = 114,853.05

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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.