Home / 155,653.21-214,811.89-86,753.39

Finding the Fourth Proportional to 155,653.21, 214,811.89 and 86,753.39

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Solution

The fourth proportional to 155,653.21, 214,811.89 and 86,753.39 is: 119,725.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,653.21 : 214,811.89 = 86,753.39 : x
  2. Step 2: Convert to fraction form
    155,653.21/214,811.89 = 86,753.39/x
  3. Step 3: Cross multiply
    155,653.21x = 214,811.89 × 86,753.39
  4. Step 4: Simplify right side
    155,653.21x = 18,635,659,669.81
  5. Step 5: Solve for x
    x = 18,635,659,669.81/155,653.21
  6. Step 6: Final answer
    x = 119,725.51

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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.