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Finding the Fourth Proportional to 172,902.60, 259,062.30 and 143,159.40

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Solution

The fourth proportional to 172,902.60, 259,062.30 and 143,159.40 is: 214,497.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,902.60 : 259,062.30 = 143,159.40 : x
  2. Step 2: Convert to fraction form
    172,902.60/259,062.30 = 143,159.40/x
  3. Step 3: Cross multiply
    172,902.60x = 259,062.30 × 143,159.40
  4. Step 4: Simplify right side
    172,902.60x = 37,087,203,430.62
  5. Step 5: Solve for x
    x = 37,087,203,430.62/172,902.60
  6. Step 6: Final answer
    x = 214,497.66

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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.