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Finding the Fourth Proportional to 155,383.20, 214,315.20 and 101,581.92

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Solution

The fourth proportional to 155,383.20, 214,315.20 and 101,581.92 is: 140,108.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,383.20 : 214,315.20 = 101,581.92 : x
  2. Step 2: Convert to fraction form
    155,383.20/214,315.20 = 101,581.92/x
  3. Step 3: Cross multiply
    155,383.20x = 214,315.20 × 101,581.92
  4. Step 4: Simplify right side
    155,383.20x = 21,770,549,501.18
  5. Step 5: Solve for x
    x = 21,770,549,501.18/155,383.20
  6. Step 6: Final answer
    x = 140,108.77

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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.