Home / 153,142.74-229,222.62-81,887.40

Finding the Fourth Proportional to 153,142.74, 229,222.62 and 81,887.40

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Solution

The fourth proportional to 153,142.74, 229,222.62 and 81,887.40 is: 122,568.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,142.74 : 229,222.62 = 81,887.40 : x
  2. Step 2: Convert to fraction form
    153,142.74/229,222.62 = 81,887.40/x
  3. Step 3: Cross multiply
    153,142.74x = 229,222.62 × 81,887.40
  4. Step 4: Simplify right side
    153,142.74x = 18,770,444,372.99
  5. Step 5: Solve for x
    x = 18,770,444,372.99/153,142.74
  6. Step 6: Final answer
    x = 122,568.29

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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.