Home / 153,286.15-229,976.04-78,459.31

Finding the Fourth Proportional to 153,286.15, 229,976.04 and 78,459.31

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Solution

The fourth proportional to 153,286.15, 229,976.04 and 78,459.31 is: 117,712.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,286.15 : 229,976.04 = 78,459.31 : x
  2. Step 2: Convert to fraction form
    153,286.15/229,976.04 = 78,459.31/x
  3. Step 3: Cross multiply
    153,286.15x = 229,976.04 × 78,459.31
  4. Step 4: Simplify right side
    153,286.15x = 18,043,759,872.76
  5. Step 5: Solve for x
    x = 18,043,759,872.76/153,286.15
  6. Step 6: Final answer
    x = 117,712.92

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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.