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Finding the Fourth Proportional to 143,101.80, 214,652.70 and 101,111.40

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Solution

The fourth proportional to 143,101.80, 214,652.70 and 101,111.40 is: 151,667.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,101.80 : 214,652.70 = 101,111.40 : x
  2. Step 2: Convert to fraction form
    143,101.80/214,652.70 = 101,111.40/x
  3. Step 3: Cross multiply
    143,101.80x = 214,652.70 × 101,111.40
  4. Step 4: Simplify right side
    143,101.80x = 21,703,835,010.78
  5. Step 5: Solve for x
    x = 21,703,835,010.78/143,101.80
  6. Step 6: Final answer
    x = 151,667.10

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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.