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Finding the Fourth Proportional to 159,316.48, 219,844.64 and 91,332.80

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Solution

The fourth proportional to 159,316.48, 219,844.64 and 91,332.80 is: 126,032.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,316.48 : 219,844.64 = 91,332.80 : x
  2. Step 2: Convert to fraction form
    159,316.48/219,844.64 = 91,332.80/x
  3. Step 3: Cross multiply
    159,316.48x = 219,844.64 × 91,332.80
  4. Step 4: Simplify right side
    159,316.48x = 20,079,026,536.19
  5. Step 5: Solve for x
    x = 20,079,026,536.19/159,316.48
  6. Step 6: Final answer
    x = 126,032.33

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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.