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Finding the Fourth Proportional to 153,659.93, 211,568.17 and 130,644.49

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Solution

The fourth proportional to 153,659.93, 211,568.17 and 130,644.49 is: 179,879.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,659.93 : 211,568.17 = 130,644.49 : x
  2. Step 2: Convert to fraction form
    153,659.93/211,568.17 = 130,644.49/x
  3. Step 3: Cross multiply
    153,659.93x = 211,568.17 × 130,644.49
  4. Step 4: Simplify right side
    153,659.93x = 27,640,215,872.19
  5. Step 5: Solve for x
    x = 27,640,215,872.19/153,659.93
  6. Step 6: Final answer
    x = 179,879.14

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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.