Home / 125,301.20-188,005.80-72,755.60

Finding the Fourth Proportional to 125,301.20, 188,005.80 and 72,755.60

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Solution

The fourth proportional to 125,301.20, 188,005.80 and 72,755.60 is: 109,164.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,301.20 : 188,005.80 = 72,755.60 : x
  2. Step 2: Convert to fraction form
    125,301.20/188,005.80 = 72,755.60/x
  3. Step 3: Cross multiply
    125,301.20x = 188,005.80 × 72,755.60
  4. Step 4: Simplify right side
    125,301.20x = 13,678,474,782.48
  5. Step 5: Solve for x
    x = 13,678,474,782.48/125,301.20
  6. Step 6: Final answer
    x = 109,164.75

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.