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Finding the Fourth Proportional to 159,264.09, 219,792.47 and 91,288.89

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Solution

The fourth proportional to 159,264.09, 219,792.47 and 91,288.89 is: 125,983.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,264.09 : 219,792.47 = 91,288.89 : x
  2. Step 2: Convert to fraction form
    159,264.09/219,792.47 = 91,288.89/x
  3. Step 3: Cross multiply
    159,264.09x = 219,792.47 × 91,288.89
  4. Step 4: Simplify right side
    159,264.09x = 20,064,610,160.21
  5. Step 5: Solve for x
    x = 20,064,610,160.21/159,264.09
  6. Step 6: Final answer
    x = 125,983.27

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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.