Home / 155,780.40-214,977.12-84,160.56

Finding the Fourth Proportional to 155,780.40, 214,977.12 and 84,160.56

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Solution

The fourth proportional to 155,780.40, 214,977.12 and 84,160.56 is: 116,141.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,780.40 : 214,977.12 = 84,160.56 : x
  2. Step 2: Convert to fraction form
    155,780.40/214,977.12 = 84,160.56/x
  3. Step 3: Cross multiply
    155,780.40x = 214,977.12 × 84,160.56
  4. Step 4: Simplify right side
    155,780.40x = 18,092,594,806.39
  5. Step 5: Solve for x
    x = 18,092,594,806.39/155,780.40
  6. Step 6: Final answer
    x = 116,141.66

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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.