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Finding the Fourth Proportional to 142,665.73, 213,669.63 and 102,434.96

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Solution

The fourth proportional to 142,665.73, 213,669.63 and 102,434.96 is: 153,416.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,665.73 : 213,669.63 = 102,434.96 : x
  2. Step 2: Convert to fraction form
    142,665.73/213,669.63 = 102,434.96/x
  3. Step 3: Cross multiply
    142,665.73x = 213,669.63 × 102,434.96
  4. Step 4: Simplify right side
    142,665.73x = 21,887,240,536.44
  5. Step 5: Solve for x
    x = 21,887,240,536.44/142,665.73
  6. Step 6: Final answer
    x = 153,416.25

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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.