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Finding the Fourth Proportional to 159,333.33, 219,830.38 and 90,411.38

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Solution

The fourth proportional to 159,333.33, 219,830.38 and 90,411.38 is: 124,739.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,333.33 : 219,830.38 = 90,411.38 : x
  2. Step 2: Convert to fraction form
    159,333.33/219,830.38 = 90,411.38/x
  3. Step 3: Cross multiply
    159,333.33x = 219,830.38 × 90,411.38
  4. Step 4: Simplify right side
    159,333.33x = 19,875,168,021.72
  5. Step 5: Solve for x
    x = 19,875,168,021.72/159,333.33
  6. Step 6: Final answer
    x = 124,739.55

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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.