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Finding the Fourth Proportional to 158,223.97, 218,351.15 and 86,602.47

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Solution

The fourth proportional to 158,223.97, 218,351.15 and 86,602.47 is: 119,512.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,223.97 : 218,351.15 = 86,602.47 : x
  2. Step 2: Convert to fraction form
    158,223.97/218,351.15 = 86,602.47/x
  3. Step 3: Cross multiply
    158,223.97x = 218,351.15 × 86,602.47
  4. Step 4: Simplify right side
    158,223.97x = 18,909,748,917.34
  5. Step 5: Solve for x
    x = 18,909,748,917.34/158,223.97
  6. Step 6: Final answer
    x = 119,512.54

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.