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Finding the Fourth Proportional to 161,679.95, 223,120.63 and 92,780.64

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Solution

The fourth proportional to 161,679.95, 223,120.63 and 92,780.64 is: 128,038.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,679.95 : 223,120.63 = 92,780.64 : x
  2. Step 2: Convert to fraction form
    161,679.95/223,120.63 = 92,780.64/x
  3. Step 3: Cross multiply
    161,679.95x = 223,120.63 × 92,780.64
  4. Step 4: Simplify right side
    161,679.95x = 20,701,273,733.00
  5. Step 5: Solve for x
    x = 20,701,273,733.00/161,679.95
  6. Step 6: Final answer
    x = 128,038.60

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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.