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Finding the Fourth Proportional to 161,801.98, 223,287.82 and 90,186.60

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Solution

The fourth proportional to 161,801.98, 223,287.82 and 90,186.60 is: 124,458.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,801.98 : 223,287.82 = 90,186.60 : x
  2. Step 2: Convert to fraction form
    161,801.98/223,287.82 = 90,186.60/x
  3. Step 3: Cross multiply
    161,801.98x = 223,287.82 × 90,186.60
  4. Step 4: Simplify right side
    161,801.98x = 20,137,569,307.21
  5. Step 5: Solve for x
    x = 20,137,569,307.21/161,801.98
  6. Step 6: Final answer
    x = 124,458.11

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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.