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Finding the Fourth Proportional to 161,379.61, 222,649.19 and 115,400.41

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Solution

The fourth proportional to 161,379.61, 222,649.19 and 115,400.41 is: 159,213.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,379.61 : 222,649.19 = 115,400.41 : x
  2. Step 2: Convert to fraction form
    161,379.61/222,649.19 = 115,400.41/x
  3. Step 3: Cross multiply
    161,379.61x = 222,649.19 × 115,400.41
  4. Step 4: Simplify right side
    161,379.61x = 25,693,807,235.17
  5. Step 5: Solve for x
    x = 25,693,807,235.17/161,379.61
  6. Step 6: Final answer
    x = 159,213.47

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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.