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Finding the Fourth Proportional to 159,047.63, 219,486.18 and 91,065.65

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Solution

The fourth proportional to 159,047.63, 219,486.18 and 91,065.65 is: 125,670.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,047.63 : 219,486.18 = 91,065.65 : x
  2. Step 2: Convert to fraction form
    159,047.63/219,486.18 = 91,065.65/x
  3. Step 3: Cross multiply
    159,047.63x = 219,486.18 × 91,065.65
  4. Step 4: Simplify right side
    159,047.63x = 19,987,650,550.29
  5. Step 5: Solve for x
    x = 19,987,650,550.29/159,047.63
  6. Step 6: Final answer
    x = 125,670.85

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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.