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Finding the Fourth Proportional to 161,963.51, 223,514.37 and 90,341.98

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Solution

The fourth proportional to 161,963.51, 223,514.37 and 90,341.98 is: 124,674.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,963.51 : 223,514.37 = 90,341.98 : x
  2. Step 2: Convert to fraction form
    161,963.51/223,514.37 = 90,341.98/x
  3. Step 3: Cross multiply
    161,963.51x = 223,514.37 × 90,341.98
  4. Step 4: Simplify right side
    161,963.51x = 20,192,730,185.47
  5. Step 5: Solve for x
    x = 20,192,730,185.47/161,963.51
  6. Step 6: Final answer
    x = 124,674.57

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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.