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Finding the Fourth Proportional to 161,939, 223,495.32 and 94,871

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Solution

The fourth proportional to 161,939, 223,495.32 and 94,871 is: 130,933.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,939 : 223,495.32 = 94,871 : x
  2. Step 2: Convert to fraction form
    161,939/223,495.32 = 94,871/x
  3. Step 3: Cross multiply
    161,939x = 223,495.32 × 94,871
  4. Step 4: Simplify right side
    161,939x = 21,203,224,503.72
  5. Step 5: Solve for x
    x = 21,203,224,503.72/161,939
  6. Step 6: Final answer
    x = 130,933.40

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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.