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Finding the Fourth Proportional to 161,963.78, 223,514.77 and 90,342.26

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Solution

The fourth proportional to 161,963.78, 223,514.77 and 90,342.26 is: 124,674.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,963.78 : 223,514.77 = 90,342.26 : x
  2. Step 2: Convert to fraction form
    161,963.78/223,514.77 = 90,342.26/x
  3. Step 3: Cross multiply
    161,963.78x = 223,514.77 × 90,342.26
  4. Step 4: Simplify right side
    161,963.78x = 20,192,829,503.87
  5. Step 5: Solve for x
    x = 20,192,829,503.87/161,963.78
  6. Step 6: Final answer
    x = 124,674.97

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1.5x scale

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.