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Finding the Fourth Proportional to 147,661.79, 221,514.41 and 47,788.79

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Solution

The fourth proportional to 147,661.79, 221,514.41 and 47,788.79 is: 71,690.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,661.79 : 221,514.41 = 47,788.79 : x
  2. Step 2: Convert to fraction form
    147,661.79/221,514.41 = 47,788.79/x
  3. Step 3: Cross multiply
    147,661.79x = 221,514.41 × 47,788.79
  4. Step 4: Simplify right side
    147,661.79x = 10,585,904,633.36
  5. Step 5: Solve for x
    x = 10,585,904,633.36/147,661.79
  6. Step 6: Final answer
    x = 71,690.21

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.