Home / 153,233.44-229,989.21-78,405.28

Finding the Fourth Proportional to 153,233.44, 229,989.21 and 78,405.28

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Solution

The fourth proportional to 153,233.44, 229,989.21 and 78,405.28 is: 117,679.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,233.44 : 229,989.21 = 78,405.28 : x
  2. Step 2: Convert to fraction form
    153,233.44/229,989.21 = 78,405.28/x
  3. Step 3: Cross multiply
    153,233.44x = 229,989.21 × 78,405.28
  4. Step 4: Simplify right side
    153,233.44x = 18,032,368,407.03
  5. Step 5: Solve for x
    x = 18,032,368,407.03/153,233.44
  6. Step 6: Final answer
    x = 117,679.07

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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.