Home / 153,021.30-229,422.60-68,712.45

Finding the Fourth Proportional to 153,021.30, 229,422.60 and 68,712.45

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Solution

The fourth proportional to 153,021.30, 229,422.60 and 68,712.45 is: 103,019.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,021.30 : 229,422.60 = 68,712.45 : x
  2. Step 2: Convert to fraction form
    153,021.30/229,422.60 = 68,712.45/x
  3. Step 3: Cross multiply
    153,021.30x = 229,422.60 × 68,712.45
  4. Step 4: Simplify right side
    153,021.30x = 15,764,188,931.37
  5. Step 5: Solve for x
    x = 15,764,188,931.37/153,021.30
  6. Step 6: Final answer
    x = 103,019.57

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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.