Home / 153,801.20-230,619.54-78,890.72

Finding the Fourth Proportional to 153,801.20, 230,619.54 and 78,890.72

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Solution

The fourth proportional to 153,801.20, 230,619.54 and 78,890.72 is: 118,293.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,801.20 : 230,619.54 = 78,890.72 : x
  2. Step 2: Convert to fraction form
    153,801.20/230,619.54 = 78,890.72/x
  3. Step 3: Cross multiply
    153,801.20x = 230,619.54 × 78,890.72
  4. Step 4: Simplify right side
    153,801.20x = 18,193,741,556.67
  5. Step 5: Solve for x
    x = 18,193,741,556.67/153,801.20
  6. Step 6: Final answer
    x = 118,293.89

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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.