Home / 153,040.78-229,584.96-78,120.34

Finding the Fourth Proportional to 153,040.78, 229,584.96 and 78,120.34

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Solution

The fourth proportional to 153,040.78, 229,584.96 and 78,120.34 is: 117,192.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,040.78 : 229,584.96 = 78,120.34 : x
  2. Step 2: Convert to fraction form
    153,040.78/229,584.96 = 78,120.34/x
  3. Step 3: Cross multiply
    153,040.78x = 229,584.96 × 78,120.34
  4. Step 4: Simplify right side
    153,040.78x = 17,935,255,134.09
  5. Step 5: Solve for x
    x = 17,935,255,134.09/153,040.78
  6. Step 6: Final answer
    x = 117,192.65

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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.