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Finding the Fourth Proportional to 143,324.30, 214,690.80 and 83,980.10

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Solution

The fourth proportional to 143,324.30, 214,690.80 and 83,980.10 is: 125,796.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,324.30 : 214,690.80 = 83,980.10 : x
  2. Step 2: Convert to fraction form
    143,324.30/214,690.80 = 83,980.10/x
  3. Step 3: Cross multiply
    143,324.30x = 214,690.80 × 83,980.10
  4. Step 4: Simplify right side
    143,324.30x = 18,029,754,853.08
  5. Step 5: Solve for x
    x = 18,029,754,853.08/143,324.30
  6. Step 6: Final answer
    x = 125,796.92

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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.