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Finding the Fourth Proportional to 158,550.60, 218,795.22 and 86,929.32

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Solution

The fourth proportional to 158,550.60, 218,795.22 and 86,929.32 is: 119,959.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,550.60 : 218,795.22 = 86,929.32 : x
  2. Step 2: Convert to fraction form
    158,550.60/218,795.22 = 86,929.32/x
  3. Step 3: Cross multiply
    158,550.60x = 218,795.22 × 86,929.32
  4. Step 4: Simplify right side
    158,550.60x = 19,019,719,693.85
  5. Step 5: Solve for x
    x = 19,019,719,693.85/158,550.60
  6. Step 6: Final answer
    x = 119,959.94

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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.