Home / 136,332.33-188,171.77-78,962.40

Finding the Fourth Proportional to 136,332.33, 188,171.77 and 78,962.40

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Solution

The fourth proportional to 136,332.33, 188,171.77 and 78,962.40 is: 108,987.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,332.33 : 188,171.77 = 78,962.40 : x
  2. Step 2: Convert to fraction form
    136,332.33/188,171.77 = 78,962.40/x
  3. Step 3: Cross multiply
    136,332.33x = 188,171.77 × 78,962.40
  4. Step 4: Simplify right side
    136,332.33x = 14,858,494,923.61
  5. Step 5: Solve for x
    x = 14,858,494,923.61/136,332.33
  6. Step 6: Final answer
    x = 108,987.32

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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.