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Finding the Fourth Proportional to 158,357.04, 218,524.92 and 86,737.38

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Solution

The fourth proportional to 158,357.04, 218,524.92 and 86,737.38 is: 119,693.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,357.04 : 218,524.92 = 86,737.38 : x
  2. Step 2: Convert to fraction form
    158,357.04/218,524.92 = 86,737.38/x
  3. Step 3: Cross multiply
    158,357.04x = 218,524.92 × 86,737.38
  4. Step 4: Simplify right side
    158,357.04x = 18,954,279,025.51
  5. Step 5: Solve for x
    x = 18,954,279,025.51/158,357.04
  6. Step 6: Final answer
    x = 119,693.31

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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.