Home / 155,936.10-215,249.88-121,412.28

Finding the Fourth Proportional to 155,936.10, 215,249.88 and 121,412.28

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Solution

The fourth proportional to 155,936.10, 215,249.88 and 121,412.28 is: 167,594.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,936.10 : 215,249.88 = 121,412.28 : x
  2. Step 2: Convert to fraction form
    155,936.10/215,249.88 = 121,412.28/x
  3. Step 3: Cross multiply
    155,936.10x = 215,249.88 × 121,412.28
  4. Step 4: Simplify right side
    155,936.10x = 26,133,978,700.53
  5. Step 5: Solve for x
    x = 26,133,978,700.53/155,936.10
  6. Step 6: Final answer
    x = 167,594.15

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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.